Low Idle Adjustment; Valve Tappet Clearance; General Engine Inspection - MacDon 9000 Operator's Manual

MAINTENANCE/SERVICE
Gasoline Engine (continued)
LOW IDLE
ADJUSTMENT - GAS ENGINE
After adjusting maximum engine speed, governor
surge and idle mixture, low idle speed should be
800 RPM, with throttle lever at low idle position
(fully back).
If adjustment is necessary:
A
WARNING:
To
avoid personal injury,
disengage all drives and
engage park
brake.
It
is necessary
to
have the engine running for this
procedure. Be sure everyone in the area is
aware
that the machine is being serviced.
Use extreme care when working around moving
parts. Never wear loose fitting clothing or dangling
items such as scarves or bracelets. Keep hands,
· feet,
clothing and hair away from moving parts.
1. If unit is not equipped with optional tachometer,
connect tachometer to engine.
2. Start engine and position throttle lever in low
idle position (fully back).
3. Back off low idle stop screw (A).
4. Loosen jam nuts (B) on throttle rod (C}.
5. Set engine speed to 800 RPM by adjusting
length of throttle rod assembly with one of the
jam nuts.
6. Tighten jam nuts (B).
7. Finger tighten bolt (A) against governor lever
and lock position with jam nut.
VALVE TAPPET
CLEARANCE
THROTTLE ROD ADJUSTMENT
Every .1QQQ. hours of operation, have gas engine valve tappet clearance checked and adjusted by your
Windrower dealer.
GENERAL ENGINE INSPECTION
Every gQQQ hours of operation, see your Windrower dealer for required general service or tune-up.
58