MAINTENANCE AND REPAIR INSTRUCTIONS
Air Filter Cover
Air Filter
Fig. 43
Apply enough clean SAE 30 motor oil to lightly coat the
filter (Fig. 44).
Tab
4.
5.
6.
Fig. 47
CARBURETOR ADJUSTMENT
The idle speed of the engine is adjustable. An idle adjustment
screw is between the air filter cover and the engine starter
housing (Fig. 48).
NOTE: Careless adjustments can seriously damage your unit.
An authorized service dealer should make carburetor
adjustments.
Check Fuel
Old fuel is usually the reason for improper unit performance.
Drain and refill the tank with fresh fuel prior to making any
adjustments. Refer to Oil and Fuel Information.
Fig. 44
Clean Air Filter
The condition of the air filter is important to the operation of
the unit. A dirty air filter will restrict air flow. This is often
mistaken for an out of adjustment carburetor. Check the
condition of the air filter before adjusting the idle speed screw.
Refer to Air Filter Maintenance.
Adjust Idle Speed Screw
If, after checking the fuel and cleaning the air filter, the engine
still will not idle, adjust the idle speed screw as follows:
Squeeze the filter to spread and remove excess oil (Fig.
45).
1.
Start the engine and let it run at a high idle for a minute to
warm up. Refer to
Starting/Stopping
Idle Adjustment Screw
Instructions.
2.
Release the throttle
trigger and let the
engine idle. If the
Fig. 45
engine stops, insert a
small phillips in
Replace the filter (Fig. 46).
between the Air Filter
Cover and the Engine
Cover (Fig. 48). Turn
the idle speed screw
in, clockwise, 1/8 of a
turn at a time (as
Tabs
Back Plate
Air Filter
Fig. 48
needed) until the
engine idles smoothly.
NOTE: The cutting attachment should not rotate when the
engine idles.
Locking Tab
Fig. 46
3.
If the cutting attachment rotates when the engine idles,
turn the idle speed screw counterclockwise 1/8 of a turn
at a time (as needed), to reduce idle speed.
NOTE: If the unit is operated without the air filter, you will
VOID the warranty.
Checking the fuel, cleaning the air filter, and adjusting the idle
speed should solve most engine problems. If not and all of the
following are true:
7.
Reinstall the air filter cover. Position the slots on the top of
the air filter cover onto the tabs at the top of the back
plate (Fig. 47).
• the engine will not idle
•
the engine hesitates or stalls on acceleration
8.
Swing the cover down until the tab on the air filter
backplate snaps into place in the slot on the air filter cover
(Fig. 47).
• there is a loss of engine power
Have the carburetor adjusted by an authorized service dealer.
ROCKER ARM CLEARANCE
This requires disassembly of the engine. If you feel unsure or
unqualified to perform this, take the unit to an authorized
service center.
14
| Categories | Lawn Mower Manual, MTD Lawn Mower Manuals, MTD Trimmer Manuals, Trimmer Manuals, Troy-Bilt Lawn Mower Manuals |
|---|---|
| Tags | MTD TB525ET, Troy-Bilt TB525ET |
| Download File |
|
| Document Type | Owner's Manual |
| Language | English |
| Product Brand | MTD, Lawn Mower |
| Product Type | Walk Behind Mower |
| Document File Type | |
| Publisher | mtdproducts.com |
| Wikipedia's Page | MTD Products |
| Copyright | Attribution Non-commercial |
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