Replenishing The Coolant; Cooling System Check - Yamaha SRX440 1980 Service Manual

1980 SRX440
D. Replenishing coolant
NOTE: - - - - - - - - - -_ _
Before pouring the coolant into the radiator,
check the cooling system for damage, loose
joi nts or lea ks.
1. Loosen the air bleeder bolt.
1. Bleeder bolt
2. Remove the radiator cap, and add coo-
lant until the coolant begins to flow out
the air bleeder bolt hole (that is, all the
remaining air is forced out).
3. Tighten the air bleeder bolt, and add the
coolant up to the specified level. Start
the engine.
®
7J
-
,L
,I
j r
4. After starting the engine, the coolant
level will go down. Add coolant while
keeping the engine running.
5. When the coolant level in the radiator
becomes stable, stop the engine.
Loosen (do not remove) the bleeder bolt
located above the thermostat va Ive
and let the air out. Add coolant to
radiator again up to the level line shown
in the illustration.
6. Repeat steps 4 and 5 above until the
coolant level in the radiator becomes
stable. Tighten bleeder bolt.
7. Start the engine and keep it running at
3,000 r/min until thermostat valve
opens. The thermostat valve opens at
60
~
65
0
C. If you look into the radia-
tor, you can see when the valve opens,
that warm coolant will start flowing into
the radiator.
8. Add coolant until the reservoir tank is
filled half The air remaining in the
sys-
tem will be expelled through the radia-
tor cap.
C A U T I O N : - - - - - - - - - . . . ,
Always check coolant level, and check
for coolant leakage before starting
engine.
3-2. COOLING SYSTEM CHECK
A. Cooling system check
1. Remove the radiator cap, and install a
pressure gauge.
1. Coolant level 2. Breather pipe
'3·3