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Vanguard Twin Cylinder OHV Liquid-Cooled Manual

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Vanguard
TM
Twin-Cylinder OHV Liquid-Cooled Engine
Section 1 - General Information
Page 8
Normal coolant temperature gauge (if equipped) should
read between 175° and 195° F (80° and 90° C) when
engine is running.
If coolant temperature rises above 220° F (105° C), the
temperature light (if equipped) will illuminate. Idle engine
down for a while. Then stop engine. Once engine is
cooled, check coolant level, fan belt tension and clogged
radiator fins.
CLEANING DEBRIS
Daily or before every use, clean accumulated debris
from engine. Keep linkage, springs and controls clean.
Keep area around and behind muffler free of any
combustible debris.
Use the handle on the radiator screen to lift off for
cleaning. Clean screen thoroughly and clean radiator
fins.
Do not use water to clean engine parts. Water could
contaminate fuel system. Low pressure compressed air
may be used. Be careful not to damage radiator fins.
CAUTION: Engine parts should be kept clean
to reduce the risk of overheating and ignition of
accumulated debris
Fig. 3
ADJUST FAN BELT
• Check condition of fan belt.
• Replace if damaged or worn.
To Adjust Fan Belt Tension
1. Loosen bolt and bolt .
2. Fit torque wrench in the square hole located in the
bracket.
3. Apply 115 in. lbs. of torque in the direction of the
arrow.
4. While belt is being tensioned per step 3, torque
bolt to 125 in. lbs. (14 Nm). Torque bolt to
110 in. lbs. (12 Nm).
Fig. 4
AIR CLEANER MAINTENANCE
WARNING: Never operate engine with air
cleaner assembly or air cleaner cartridge
removed.
A properly serviced air cleaner protects internal parts of
the engine from dirt and dust particles in the air. If air
cleaner instructions are not carefully followed, dirt and
dust which should be collected in the cleaner will be
drawn into the engine. These particles are highly
abrasive and will cause the piston rings and cylinder
RADIATOR
CLEAN DEBRIS
CLEAN
HANDLE
DEBRIS
TORQUE
WRENCH
TORQUE
WRENCH
SQUARE
TORQUE
HOLE
FAN BELT
FAN BELT
… 13 …


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