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MOTORCYCLE ROLLER CHAIN Maintenance and Lubrication

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Filed Under (Tips and Review) by admin on 27-11-2010

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Cleaning and Relubrication Perhaps the largest contributor to shortened chain life is inadequate lubrica- tion. All working parts of a chain should be lubricated uniformly. The use of the highest viscosity oil that allows for flow between the link plates and coats pin-bushing areas will normally provide the greatest wear resistance. Apply oil to the upper edges of link plates. This allows for the greatest access of oil to pin-bushing joints. For open drives, excess lubrication on outer chain surfaces should be removed, since it will either be thrown off during operation or serve to collect foreign materials. If foreign objects or surplus lubrication accumulates on chain surfaces to the extent of making re-lubrication of the joints impossible, the chain must be cleaned. Standard roller chains may be cleaned by washing in kerosene or any other good petroleum-based solvent. WARNING: These solvents are flammable. Agitate the chain to assure penetration of the solvent and a thorough flushing of the pin-bushing areas. Drain off excess solvent and inspect bushings and pins for wear. Replace the chain if wear is excessive or parts are fractured or missing. O-ring chains may be cleaned externallyby washing in kerosene. Do not use any other cleaning agent or the O-rings may be damaged. When cleaning O- ring chain, clean only the external areas of the chain. Do not attempt to force kerosene into the pin-bush cavity. Do not try to repair a worn-out chain by replacing individual links. The pitch of the new links will be shorter and will most likely result in chain fatigue failure and/or severe sprocket damage. For chains which are still usable, soak them in SAE 40 or 50 automotive engine oil (without additives). Flexing the chain in oil will assure greater penetration of lubricant. Inspect and clean sprockets. If sprockets are worn or damaged, they should be replaced.Installing new chain on worn out sprockets will significantly shorten the chain’s service life. WARNING: always wear eye protection when assembling or disassembling chain

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Yamaha YZ 250F Camshafts REMOVAL AND INSTALLATION MANUAL

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Filed Under (Yamaha) by admin on 30-12-2011

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Remove the 4 bolts that hold the exhaust cam cap in place, lift the cam cap off. It may be necessary to pry very lightly on the cap to lift it off its dowel pins. Do not use the cam lobes as the pry point. Be careful not to drop the dowels and also be careful to not lose the half moon shaped retainer for the bearing under the cam cap. Remove the 6 bolts that hold the intake camshaft cap and lift the cam cap off the camshaft, again, be careful to not drop the retainer or dowels. Lift the intake camshaft out of its pocket in the cylinder head casting. Remove the cam chain from the sprocket, set the stock camshaft aside. Lift the exhaust cam out of its pocket in the cylinder head casting and remove the chain from the sprocket. Do not drop the cam chain, dangle it over the side of the engine while keeping slight upward pressure on the chain to maintain its position on the drive sprocket on the crankshaft. Fit the half moon shaped retainers in the grooves of the Hot Cams camshaft bearings to ensure good fit, set retainers aside for the time. Using assembly lube, lube the shim buckets, bearing surfaces for the camshafts in the cylinder head, and pack some in the camshaft bearings. Set the exhaust cam into the cylinder head casting while at the same time fitting the cam chain over the sprocket. Make sure that you keep all the cam chain slack to the back of the engine. The cam chain pulls the camshaft sprockets in a counter clockwise direction and the slack of the chain must be kept on the cam chain tensioner side of the engine. The exhaust cam has two timing marks on it. When correctly installed one mark will be at the 9 o’clock position and the other mark will be at the 12 o’clock position. When correctly timed the mark at 9 o’clock will be aligned with the valve cover gasket surface. Repeat the above process for the intake camshaft. Again, make sure you keep the chain slack to the cam chain tensioner side of the engine. Check to be sure the crankshaft is still at TDC. The intake cam has two timing marks also. One at 12 o’clock and the other at 3 o’clock. When both cams are installed correctly, the valve cover gasket surface will form a straight line through the exhaust timing mark at 9 o’clock and the intake timing mark at 3 o’clock

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Harley-Davidson CHAIN DRIVE INSTALLATION INSTRUCTIONS

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Filed Under (Harley Davidson) by admin on 15-04-2012

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1) Assemble & install the chain tensioner assembly over the primary chain as shown in figure 1. 2) Install the compensator sprocket with extender & spacer (numbers 5, 6, & 7, FIG 2)(#7 is not included in this kit), primary chain, chain tensioner, and clutch basket simultaneously onto the motor drive shaft & transmission main shaft. Rotate the chain drive slightly as needed to allow the splines to line-up. 3) Install the chain tensioner nut loosely on the chain tensioner bolt. 4) Install the sliding cam onto the compensator sprocket, & slide the compensating sprocket cover-assembly (#3) over the cam. 5) Apply 2 drops of Rivera “Red” thread-lock on the threads of the motor drive shaft, & install the motor nut loosely with the fingers at this time. The hex spacer (#7) and spacer (#2) as seen in fig.2 are not provided in Rivera Engineering’s chain drive kit. These components are required with some applications, and can be purchased from your local Harley-Davidson dealer. FIG 2 6) Apply 2 drops of Rivera “red” thread-lock on the threads of the transmission main-shaft and loosely install the clutch hub nut (left hand threads). 7) Place the HD “Primary Drive Locking Tool” HD-41214 on the primary chain as shown in figure XXX and tighten the motor sprocket nut to 150-165 foot-pounds. 8)Turn the locking tool 180 degrees and move it to the clutch sprocket. Tighten the clutch hub nut to 70-80 foot pounds (left- hand thread). Adjust chain tension so that the top strand has 5/8″- to-7/8″ of up and down play (cold drive train). Tighten the center bolt nut to 21-29 foot pounds of torque.

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HONDA GL1800 TIMING CHAIN COVER INSPECTION NUT INSTALLATION MANUAL

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Filed Under (Honda) by admin on 28-02-2011

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GL1800 TIMING CHAIN COVER INSPECTION NUT 1. Place bike on center stand. 2. Remove the inspection nut on the bike using a 17mm socket. 3. Remove the rubber o-ring seal from the inspection nut and place on new inspection nut. 4. Install the new inspection nut using the 17mm socket.

Kawasaki KFX KLX 400 Camshafts Installation Instructions

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Filed Under (Kawasaki) by admin on 25-10-2010

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Remove the plug bolt from the back of the cam chain tensioner assembly. It is under pressure from the spring. Remove the spring and pin. Remove the bolts and tensioner assembly from the cylinder. Release the lock on the tensioner assembly and push the tensioner rod into the assembly so that it is fully retracted. Remove the eight 5mm Allen headed bolts that hold the cam caps in place. Remove the cam caps; be aware of the locating dowels in the caps to keep them from falling into the engine. It may be necessary to pry very lightly on the caps to lift them off their dowel pins. Do not use the cam lobe as the pry point. Lift the intake camshaft out of its pocket in the cylinder head casting. Remove the cam chain from the sprocket, set the stock camshaft aside. Lift the exhaust cam out of its pocket in the cylinder head casting and remove the chain from the sprocket. Do not drop the cam chain; dangle it over the side of the engine while keeping slight upward pressure on the chain to maintain its position on the drive sprocket on the crankshaft. Using assembly lube, lube the shim buckets and bearing surfaces for the camshafts in the cylinder head. Set the exhaust camshaft into the cylinder head casting while at the same time fitting the cam chain over the sprocket. Make sure that you keep all the cam chain slack to the back of the engine. Repeat the above process for the intake camshaft. Again, make sure you keep the chain slack to the cam chain tensioner side of the engine. Check to be sure the crankshaft is still at TDC. Check the location of the cam lobes. The camshafts are marked, and preset to 108-degree centers. If the lobes are not where they should be, adjust the positioning of the camshaft by rotating the sprocket one tooth on the chain. Do this until it is in the correct position as before you removed the camshafts. Check the positioning of the crankshaft for the TDC mark

ULTIMA IGNITION MODULE AND KIT INSTALLATION MANUAL FOR HARLEY DAVIDSON

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Filed Under (Harley Davidson) by admin on 03-03-2011

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Disconnect battery. 2. Mark location of timing plate in relation to inside of cam cover. This will give a starting point for timing on new module. Remove old ignition if applicable (see manual) Clymer, Haynes. 3. If your bike is not equipped with timing rotor M/W# 53-528 OEM#32402-83 you must buy one (included in kit). Also a single fire coil is needed (included in kit) M/W# 53-632. Any single fire coil rated 2-4 ohms can be used. NO SOLID CORE PLUG WIRES (copper, silver) they will damage the unit. 4. Install module: helpful hints, early model nose cones, i.e. Shovel Heads, the hole for the wire may need to be drilled out. Align with previously scripted mark for timing. Use lockwashers for stand offs for correct clearance of cover plate. Run wire loom. 5. Connect wires, see wiring diagram. Tape unused wires, green or brown. 12v to tach (brown) will damage module. Set timing. 1996 and later should not be timed 20˚ BTDC as the OEM module, but at 35˚ BTDC. Use this mark when using timing light. If VOESswitch is not used you must ground VOES wire (green) while timing. Refer to manual for correct identification of timing marks. At start up and timing, set spark advance in middle position. FUNCTION SWITCHES LED timing indicator light: When out, shows TDC. When ignition is on, LED will light up. When engine is cranking LED will blink. Electric Start/Kickstart: Set accordingly. VOES/Race mode: VOES switch lets the motor run smoother and improves gas mileage. If you don’t use it or add one tape up green wire and switch to race. VOES switch to use, M/W# 53-652. Spark advance: High compression motors should use race mode and 93 octane or better gas. Changing from VOES to race changes advance curves. Agood rule of thumb is if the engine knocks when throttle is applied in high gear, turn back spark advance curve until it stops engine knock. RPMlimiter: Set at desired RPM to cut engine power. Rear Cylinder: This is for racing and should be set at a dyno. +/-5˚. Rear cylinder timing is achieved through this adjuster. Most should dial to middle setting and leave alone. After all switches are set, install cover with supplied gasket and feel the increased performance of a solid state single fire ignition. Again, we remind you, if you don’t feel confident about installing this unit, let a qualified mechanic do it and be assured you are getting the best performance and gas mileage possible.

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KTM 250F Timing Chain Tensioner Installation Instructions

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Filed Under (KTM) by admin on 19-10-2010

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1) Remove OEM Tensioner: On some models including the 250F motors, it may be necessary to put the engine at TDC before proceeding. Check your manual. This is not the case on the 450 and 530 single cam motors. • Remove the outer cover plug. • Remove the large cover with copper washer. • Using needle nose pliers grab the end of the OEM tensioner and pull it outward. Be careful not to damage the aluminum port or face. • If the O-ring did not come out with the tensioner, carefully reach into the port and remove it without pushing it further into the engine. 2) Install new Tensioner: • To prepare the new tensioner, set the spring aside. Put the new tensioner in the collapsed position. (They are packaged and shipped in the collapsed position.) If you have extended it, rotate the assembly until the “top” on the piston is facing up. Then a light tap from the bottom will release the ratchet. This will now allow the plunger to be retracted to about 1- 13/16″ (46mm). • Install the O-ring over the tensioner body, keeping it outboard of the ridge as shown. • Slide the tensioner assembly with O-ring (without the spring), into the engine port. The end (with the hex-head spring hole) should only protrude from the engine about 1/32″ (.75mm). • Install the cover and tighten. The copper washer should be tight. • Insert the spring through the cover port. As it is slowly inserted, you may hear clicks as it pushes the plunger inward while ratcheting. • Install and tighten the plug against the spring. Note: some 250F engines have a one piece cap. Slide the spring into the tensioner far enough to hold it, then capture it with the cap and tighten. • Start the engine and carefully check for oil leaks. Adjustment will occur internally as it is needed. No further maintenance of the tensioner is required

Yamaha YZ400/426F Camshafts REMOVAL AND INSTALLATION MANUAL

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Filed Under (Yamaha) by admin on 01-01-2012

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Cleanliness is always a good place to start. Make sure the motorcycle is cleaned thoroughly before you start. It would be advisable to use an engine degreaser on the frame and the engine. This will ensure a clean engine during the assembly process and less of a chance of thread damage and/or dirt contamination in the engine during reassembly. And as always, replace any fiber-based gasket that was moved in any way, i.e.: cam chain tensioner. You will need basic hand tools and a torque wrench, machine towels (rags), some cleaning solvent, and a cam chain tensioner gasket. And the Hot Cams’ Degree Wheel Kit if you so desire. We will start by removing the tank and seat, top engine mount, and the cam cover. Remove the crankshaft cap and timing hole cap on the left engine case cover. Remove the spark plug. Rotate the engine in a counter clockwise (CCW) direction. Position the engine on top dead center (TDC) using the mark on the flywheel or better yet a degree wheel using a positive stop. Be sure to notice that the intake valves were the last to move, this will ensure the engine of being on “true” TDC. True top dead center occurs when both the intake and exhaust valve are closed when the piston is at TDC. This is technically the end of the compression stroke and the Page 1
beginning of the power stroke. The “artificial” TDC is during the overlap when both the intake and exhaust valves would be open. Note the positioning of the cam lobes (their included angle will be close to 170 degrees), this will help during the installation of your new Hot Cams camshafts Remove the cap bolt on the end of the cam chain tensioner block, be aware of the copper washer. Release the spring tension on the cam chain tensioner by turning the flat blade screw slot inside the adjuster block in a clockwise (CW) direction; it will lock in the retracted position. Remove the two 8mm headed bolts that hold the cam chain tensioner to the cylinder block. Remove and discard the gasket. Remove the 4 bolts that hold the exhaust cam cap in place, lift the cam cap off. It may be necessary to pry very lightly on the cap to lift it off its dowel pins. Do not use the cam lobes as the pry point. Be careful not to drop the dowels and also be careful to not lose the half moon shaped retainer for the bearing under the cam cap. Remove the 6 bolts that secure the intake cam cap and lift the cam cap off the camshaft, again, be careful to not drop the retainer or dowels. Lift the intake camshaft out of its pocket in the cylinder head casting. Remove the cam chain from the sprocket, set the stock camshaft aside. Lift the exhaust camshaft out of its pocket in the cylinder head casting and remove the chain from the sprocket. Do not drop the cam chain, dangle it over the side of the engine while keeping slight upward pressure on the chain to maintain its position on the drive sprocket on the crankshaft

YAMAHA XS650H/ SH Supplementary Service Manual

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Filed Under (Yamaha) by admin on 21-11-2010

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Ignition timing check 1. Ignition timing is checked with a timing light by observing the position of the rotor pointer and the marks stamped on the timing plate. The timing plate is marked as follows. “ll” Firing range for No. 1 (L.H.) “T” Top Dead Center for No. 1, fL.H.1 cylinder 2. Connect the timing light to the left cylinder spark plug lead wire. 3. Start the engine and keep the engine speed as specified. Use a tachometer to check the engine speed. B. PICK-UP COIL ASSEMBLY The method of mounting the pick-up coil assembly is changed for easier service work. Thus, the followings “Pick-up coil assembly removal” and “Pick-up coil assembly reinstallation” should be changed. Pick-up coil assembly removal Remove the pick-up coil securing screws and remove the pick-up coil assembly. Pick-up coil assembly reinstallation Install the pick-up coil assembly on to the stator assembly. _ L 4. Specified engine speed: 1,200 r/min The rotor pointer should be within the limits of ” fl ” on the timing plate. If it exceeds the limits or does not steady, check the timing plate for tight- ness and/or ignition system for damage. NOTE: Ignition timing is not adjustable. C. FUEL LEVEL The carburetor is furnished with a drain screw to provide easy access to service work. Thus, the following “Fuel level measurement” should be added. Fuel level measurement NOTE: Before checking the fuel level, note the follow- ing: 1. Place the motorcycle on a level surface. 2. Adjust the motorcycle position by placing a suitable stand or a garage jack under the engine so that the carburetor is positioned vertically. 1. 2. Connect the level gauge (special tool) or a vinyl pipe of 6 mm (0.24 in) in inside diameter to the float bowl nozzle left or right side carburetor. Set the gauge as shown and loosen the drain screw 3. Start the engine and stop it after a few minutes of run. This procedure is neces- sary to obtain the correct fuel level. NOTE: Make sure the fuel petcock is “ON” or “RES” oosition. 4. Note the fuel level and bring the gauge to the other end of the carburetor line and repeat step 3 above. Note the fuel level again and compare it with the previous gauge reading. They should be equal. If not, place a suitable size of wooden piece or the. alike under the center stand and adjust. 5. Check the fuel level one by one. The level should be in the specified range.

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Harley-Davidson Electronic Ignition Module Installation instructions

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Filed Under (Harley Davidson) by admin on 23-04-2012

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Step 1: Switch main dashboard switch to “off” position (Ignition& light switch) Step 2: Disconnect negative (ground) cable from the Battery Step 3: Remove the Condenser and Breaker points from the circuit breaker timing base. Step 4: Disconnect advance/ retard cable from timing base Step 5: Remove timing base from timer shaft and housing (see your manual for instructions) Step 6: Remove circuit breaker wire stud or circuit breaker to coil wire assembly from timing base Step 7: Remove circuit breaker wire from Ignition coil, and mark terminal on coil with piece of tape. Step 8: Install the Electronic Ignition Module on the timing base. Mount this short black wire to one on the timer base screws by keeping some slack in this wire so the timing base can turn free. Solder the flag terminal to this short black wire and mount it under the timer to motor bolt. This way of mounting provides a much better grounding. Do NOT use the screws (number 1 or 2 screws from picture below) from the timing base!!!! Step 9: Now three wires pass this hole via the rubber grommet. Figure 1 Figure 2 Step 10: Reinstall the timer base on the timer shaft housing, and keep some slack in the wires before protruding the hole in the timer shaft housing, and secure with ground spring and cover retainer. Reconnect the advance/retard cable to the timer base. Step 11: Route the two long wires to the ignition coil. Check in the HD service manual for a proper route to the ignition coil. (Keep away from hot surfaces like exhaust systems). Cut the wires to the exact length necessary for mounting. Step 12: Determine the exact length of the wire loom. Keep in mind that one end of the loom enters the timer shaft housing by 1cm. Cut the loom to the proper length. Step 13: Insert both wires in the loom. Strip both wire ends and solder the two flag terminals on the wires. Step 14: Connect the red wire to the ignition coil, on the terminal where the 6 or 12 volt is supplied to. This terminal has at minimum one wire connected which runs to the main switch. Step 15: Connect the black wire to the ignition coil on the terminal which is empty, and has piece of tape on it. (Old place where the circuit breaker wire was connected to) Step 16: Install the trigger rotor on the timer shaft cam, and tighten the hex screw by using the hex key tool. Do not over tighten the screw! Step 17: Check for clearance between trigger rotor and Electronic Ignition Module. Appropriate clearance is between 0,5mm and 1,5mm . Minor adjustments can be made by unlocking the two screws and slightly shift/move the Electronic Ignition Module. Check if the rotor moves free. Timing instructions: Remove the spark plugs from the engine, but keep them connected to the spark coil cables and engine ground. This enables normal operation of the spark, and prevents unwanted engine firing on compression stroke. See service manual or handbook for timing instructions of your model Step 18: Reconnect the negative (ground) cable to the battery. Step 19: Switch main power to “on” position. The red light in the Electronic Ignition Module might already light up. If not, turn the kick starter slowly. The red light is on while charging (closed points)the Ignition coil, facing solid metal of the trigger rotor. The light goes off (open points) when the end of the solid surface of the trigger rotor passes the centre of the Electronic Ignition Module. At that point a spark is generated by the coil

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