Tennant 1550, Manual

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MAINTENANCE
1550 Gas/LPG/Diesel MM283 (6--96)
3--28
6. Allow the fuel pump to operate until fuel, free
from air, comes through the filter vent point.
FOR SAFETY: When servicing machine, keep
flames and sparks away from fuel system
service area. Keep area well ventilated.
7. Tighten the filter vent screw.
8. Loosen all four of the high pressure fuel line
connections at the atomizers.
9. Operate the starter motor until fuel, free
from air, comes from the line connections.
10.Tighten the high pressure fuel line
connections. The engine is now ready to
start.
11.Close the access doors.
NOTE: The bleeding operation may take a
considerable amount of cranking with the starter
to purge all air. It is important that the battery be
in good operating condition when bleeding.
If the engine will not start after bleeding, or any
other time, it may be an indication of a low battery
charge. If the voltage to the fuel shutoff solenoid
falls below 8 volts, the valve will shut off fuel to
the engine. This may happen during cranking if
the battery charge is low. The condition may not
be readily apparent since cranking speed might
still be good.
NOTE: If the engine runs correctly for a short time
and then stops, or runs roughly, check for air in
the fuel system. If there is air in the system, there
is probally a leak in the low pressure system.
11.Turn the ignition switch off.
GOVERNOR -- Gas/LPG CONTINENTAL
ENGINES (For machines serial number
001000--001423)
The TM27 cam gear governor differs from a
conventional centrifugal governor, mainly in the
round steel balls used as the actuating force
producer instead of pivoting masses of weight.
When the governor is driven at increasing speeds
by the engine, the hardened steel balls move
outward forcing the conical upper race and lever
assembly toward a closed throttle position.
The lever assembly is pulled towards the open
position by an externally mounted spring. As the
speed increases, the centrifugal force created by
the balls will increase until a balanced condition
between the governor force and the spring force
exits, and the governing lever remains stationary
— holding constant engine RPM.
This built-in cam-gear governor is sealed, dust
proof, engine lubricated, compact and easily
adjusted. The control shaft floats on two needle
bearings to remove friction for closer and more
accurate control through the whole power range.
The idle surge adjusting screw, if supplied, should
be adjusted “in” just far enough to eliminate any
tendency of the engine to surge.
A
B
C
D
11123
GOVERNOR LINKAGE
A. Carburetor to Governor Rod
B. Speed Adjustment Screw
C. Lock Nut
D. Governor