Be sure the tab E on outer edge of diaphragm is positioned properly in the carburetor body. If there is prior to operating the engine for the first time. Break-In: It is extremely important tomaintain proper chain tension to ensure the best possible chain life. Install the nuts with their tapered side to- wards the wheel. The pre filter should be cleaned before each ride using the following procedure: 1. Torque the slide pins to 30--35 ft. Remove nut from puller rod and take installation tool and clutch cover off rod.
Check the spark plug for electrode erosion 2. Replacement of brake components requires professional knowledge. Ride cautiously in unfamiliar areas. Remove the defective bulb by pulling it out. Remove the caliper mounting bracket A from the side of the axle housing. Lube splines with a light film of grease.
Take care not to lose these parts. If the engine was started before checking the oil level, be sure to warm up the engine sufficiently, Tightening torque: and then wait at least ten minutes until the oil set- Spark plug:. Shift the transmission into neutral. A fuel level test allows you to observe the height of the fuel in the float bowl without removing the carburetor. These procedures should be performed by a Yamaha dealer. Headlight beam adjusting screw 2.
Removal of the tamper proof plug is not permitted. The subsequent pages give detailed procedures. Note the location of the spring in the moveable sheave, and remove the spring. Light will be visible between the needle and needle jet if it is worn. Other topics covered in this manual are: exploded view of the engine, sorque specifications, torque patterns, piston identification, engine service data, cooling system specs, engine removal and installation, cylinder honing, oil flow, rocker arm and pushrod inspection, valve inspection, valves, combustion chamber, valve seat reconditioning, cylinder head and assembly, valve sealing test, engine head reassembly, cylinder removal, piston removal, piston, pistons, piston rings, piston ring gap, engine lower end, troubleshooting and so much more. Follow procedure to install hilliard clutch components and hub as outlined in this chapter. Be sure that the engine has sufficiently slowed before engaging a lower gear.
Slowly pump the brake lever until pressure has been built up. Prac- at the same speed. Be sure line fits tightly on fitting. They should then ry or death of the child. If the reverse indicator light fails to come on: 1. Inspect housing for cracks or wear. Replace chain if measurement is longer than 5.
Brake lever free play 1. Remove the sponge material from the air filter 3. Install: Cylinder head 40 Nm 4. Wiring connection the entire starting sys- 6. Be sure line fits tightly on fitting. Remove the valve and wash with soap and water.
If the performance is poor at low speeds, check for a white smoke in the crankcase breather tube. Im- proper throttle operation could result. Install the oil strainer, compression spring, O- 2. Remove the transmission cover bolts. Inspect the Teflont coating on the moveable sheave bushing.
To prevent this from occurring, the valve clearance must be adjusted by a Yamaha dealer at the inter- vals specified in the periodic maintenance and lu- brication chart. Turn puller barrel to apply more tension if needed. Reassemble the pump in the reverse order of disassembly. Have a Yamaha dealer replace the stabilizer bush- es if necessary. É To hole on the rear fender. Install brake pads in caliper body with friction material facing each other.
Record the information on this label in the space provided. Insert the air filter element assembly into the poor performance and possible engine over- air filter case, and then install the air filter case heating. Push the brake camshaft lever in direction a 3. Yamaha Big Bear 400 Service Manuals Repair 2007 2010 Yfm40fb can be very useful guide, and yamaha big bear 400 service manuals repair 2007 2010 yfm40fb play an important role in your products. Check the engine oil level on a cold engine. Disconnect impulse line from pump. Do not exceed the maximum load of 210.