Honda CB450 1968 Service Manual page 165

IS4
6. INSPECTION AND ADJUSTMENT
Fig. 6. 24 Cl utch cab le ad jutment
CD
Locking nut
®
Ci rcular ad just ing bo lt
Fi g. 6. 25 Clutch coble adjustment
CD
Coble ad juster
®
Lo cking nur
Fig . 6. 26 Com chain od jusrmer,I
CD
Tensio ner adj usting bo lt
®
Locking nut
(3) When the clutch lever is re leased gradually
and the engine is acce lerated , does the mo-
torcycle start smoothly
?
c. The clutch cab le is also adjusted by loosening
the nuts and the adjusters. (Fig. 6. 24 and
25)
9. Com Chain Ad justment
For Hondo 450, a light endless chain is used
to improve efficiency and reduce noise.
If the cam chain becomes loose , the val ve
timing w ill be off, and engine efficie ncy lowered,
i.e., the horsepower is reduced and engine noise
increased.
a. Remove the dynamo cover, turn the dynamo
rotor counter-clockwise and align the "LT"
mark with the index mark on the stator.
b. Loosen the lock nut and the ad just screw.
The chain is automatically tightened.
(Fig. 6. 26)
c. Retighten the adjusting screw and lock nut
firmly.
NOTE:
( 1) It shoul d be noted that the tensioner push
rod should not be pushed in w ith f1nger and
the cam chain should not be tig htened exces-
sively . This shortens the chain service life
and lessens the guide roller durability.
!2) Remo ving the cylinder head cover, inspect
the chain w ear and seals.
1 0. Carburetor Cleaning and Adjustment
If the carbureto r is contaminated or improperly
adjusted, the engine effic iency is notic eably low-
ered. For example, if the mixture is too lean,
the engine overheats, and if too rich, engine
opera tion becomes heavy and defec ti ve. When
fuel overnows, it may cause fire. For these
reasons, the carbure tor mus t be disassemb led,
inspected, and adjusted period ically.
a. Remove both left and rig ht air cleaner case.
b. Remo ving the 6 mm hex head bolt and air
cleaner connecting tube bond screws, toke off
the left and right air cleaners.
c. Loosening the throttle coble adjusting bolt
and nut, remove the throttle cables from the
carburetors.
d. Remove the carburetors .
e. Disassemble and clean the carburetors with
gasoline.