Cam Chain Tensioner - Honda ST50 1969 Shop Manual

3.4 Cam Chain Ten1ioner
A constant foroe
is
applied to the cam chain
au1oma1ically by the hydraulic and spring-
operated cam chain tensioner.
(Fig.
JI).
Check valve inspection
Push the pushrod and check to sec if oil is
leaking from the check valve II the oil is
leakina, it is probably due to dirt in the valve.
Clean the valve by blowing out with compressed
air.
If
the oil is dirty, it should be changed.
Check the auide rollers for wear.
The manual cam chain tensioner is equipped
on the
cn0- 70H Kl. K2 and Kl
models.
Cam C:.in Acl~I
l.
To adjust, loosen the tock nut and back off
the lensioner adjusting bolt approximately
l/2tum.
3.5 Piaton and Piaton Ringa
Description
The piston is made of special SAE 332 alminum
alloy to minimize material deformation caused
by hiah tempcl1lture and also because of its good
wear resistant qualities. The piston rings specially
should be highly resistant and therefore. they
arc hard chrome plated or wet honed to aivc it
1hcdcsircdcharac1eristics.
21
Fl&-
JI-A
FIK. 31-8
Fif;. 32