Raptor 900 Compact Wood Chipper/Shredder
E&OE
©2018 Michigan USA
18
Air Filter
Operating the machine without a functional air filter may cause severe engine damage and will void
any warranty. • A dirty or oil saturated air filter will restrict air flow, which can reduce performance
and be mistaken as fuel system problems. Check the condition of the air filter before adjusting engine idle
speed, where applicable. • If the air filter is damaged (torn, broken, disintegrating), replace it.
The air filter is used to prevent dirt and other particles from possibly entering the engine and causing internal
damage to it. The engine breather may be connected to the air intake assembly – this may lead to a build-up
of oil in the air filter over extended use and is normal. The air filter requires regular maintenance as per the
maintenance schedule.
Inspection and Cleaning
Inspect the air filter for dirtiness and debris, damage etc. Clean or replace the filter element as necessary.
The air filter housing includes an oil bath as an additional filtration safeguard, to ensure that the foam filter
element remains well lubricated. To clean air filters:
•
For foam filters, wash the filter in warm water and mild detergent, then rinse and allow to dry.
•
For paper filters, use compressed air to blow particles from it. The air should be blown from the engine
side of the filter.
•
Clean all other air filter assembly components using water and mild detergent, then dry them.
•
Discard any residual oil from the air filter base if it is contaminated and clean the air filter base, cover and
washer in high-flashpoint solvent and allow to dry. Clean the engine where the air filter installs.
Removal/Installation
To remove the air filter:
1. Unscrew (rotate left) the wing nut (
B
) securing the air filter cover (
C
) and remove the cover from the air
intake assembly (
A
).
2. Unscrew (rotate left) the wing nut (
D
) and remove the filter element (
E
).
To install the air filter:
1. Re-install the filter element and ensure it is seated correctly on the air intake assembly.
2. Re-install (rotate right) the wing nut and tighten by hand so that the filter element is secure. Do not over-
tighten.
3. Re-install the filter cover and secure it with the wing nut (rotate right). Tighten the nut by hand. Do not
over-tighten.
C
B
A
D
E
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