Removing The Timing Drive Gears; Checking The Timing Chains, Camshaft - Yamaha BT1100 2002 Service Manual

TIMING GEARS
REMOVING THE TIMING DRIVE GEAR
Front cylinder
1. Straighten the lock washer tab.
2. Remove:
• primary drive gear nut 1
NOTE:
While holding the generator rotor with the sheave
holder, loosen the primary drive gear nut.
3. Remove:
• timing drive gear 2
• dowel pins
• springs
NOTE:
When removing the timing drive gear, the dowel
pins and springs are scatter and dropping down.
Do not missing them.
Rear cylinder
NOTE:
When removing the rear cylinder timing gear,
repeat the front cylinder timing gear removal pro-
cedure. However, note the following points.
1. Remove:
• rotor assembly
• dowel pins
• springs
• timing drive gear
Refer to "GENERATOR AND STARTER
CLUTCH".
EB401422

CHECKING THE TIMING CHAINS, CAMSHAFT

SPROCKETS, AND TIMING CHAIN GUIDES
The following procedure applies to all of the timing
chains, camshaft sprockets, and timing chain
guides.
1. Check:
• timing chain 1
Damage/sitffness
chain and its respective camshaft sprockets
as a set.
2. Check:
• camshaft sprocket
Damage/wear
camshaft sprockets and the respective tim-
ing chain as a set.
3. Check:
• timing chain guide (exhaust side) 1
• timing chain guide (intake side) 2
Damage/wear
part(-s).
4-35
ENG
Replace the timing
Replace the respective
Replace the defective