Section 7: Maintaining Your Lawnmower; Engine Maintenance - Troy-Bilt Series 959 Operator's Manual

21" self-propelled mower
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NOTE:
For some people the drive clutch handle may
not be in a comfortable position.
You can adjust the
handle out by tightening the adjustment wheel.
Shift LeverCableAdjustment
Periodic adjustment of the three speed shift cable may
be required due to normal wear on the cable.
Adjustment is needed if all three speeds do not work.
The adjustable cable bracket is located on the left side
of the mower, beside the engine. Follow instructions
below to adjust shift lever.
Start Engine and place speed control in the third
speed position. See Figure 10.
Bottom View
®
®
Upper"
Handle
Speed Control
Lever
Stop engine and disconnect spark plug wire and
ground it against engine.
Loosen hex nut (A) which secures the adjustable
cable bracket. See Figure 11.
Push back on the adjustable cable bracket and
tighten hex nut (A). See Figure 11.
AdjustableBracket
_Cable
1
Hex Nut
..
(A)
Figure 11
Figure 10
SECTION 7: MAINTAINING YOUR LAWNMOWER
WARNING:
Always stop engine and
disconnect spark plug wire before cleaning,
lubricating or doing any kind of service work on
the lawn mower.
NOTE:
When tipping the unit or emptying fuel tank
keep the air cleaner side of engine up. Never tip the
mower more than 90 degrees and do not leave the
mower tipped for any length of time. Off can drain into
the upper part of the engine causing a starting problem.
CleaningMower
Clean the underside of the mower deck after each
use to prevent any build-up of grass clippings. If this
debris is allowed to accumulate, it will result in rust
or corrosion.
NOTE:
We do not recommend
the use of pressure
washers or garden hose to clean your unit. These may
cause
damage
to
electric
components,
spindles,
pulleys, bearing or the engine. The use of water will
result in shortened life and reduced serviceability.
Disconnect spark plug wire.
Drain the gasoline from the lawn mower, or place a
piece of plastic under the gas cap.
Tilt the mower so that the side with the air cleaner is
facing up. Hold the mower firmly.
Scrape and clean the underside of the deck with a
suitable tool. Do not spray with water.
Put the mower back on its wheels. If you had put
plastic under the gas cap, remove it now.
EngineMaintenance
Refer to the separate engine manual for all engine
maintenance instructions.
Maintain engine oil as instructed in the separate
engine manual packed with your unit. Read and
follow instruction carefully.
Service air cleaner every 25 hours under normal
conditions. Clean every few hours under extremely
dusty conditions. Poor engine performance and
flooding usually indicated the that he air cleaner
should be serviced. To service the air cleaner, refer
to the separate engine manual packed with your
unit.
The spark plug should be cleaned and the gap
reset once a season. Spark plug replacement is
recommended at the start of each mowing season;
check engine manual for correct plug type and gap
specifications.
11

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