Dual Polyurethane Air Cleaner With Snorkel; Dual Dry Type Paper Element - Tecumseh SPECTRA 37 Service And Repair Manual

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7. DUAL POLYURETHANE AIR CLEANER
WITH SNORKEL (Fig. 11)
OPERATION
Similar to polyurethane air cleaner with paper element
and snorkel except in this instance there are two
polyurethane filters.
One filter element is located in a housing before the
carburettor and the other element is situated at the end
of the snorkel flexible pipe usually fitted at the top of the
machine handlebars. Again this system is used when
equipment is used in extremely dusty conditions.
Fig. 11
1. Filter element
2. Filter body
3. Snorkel tube
4. Pre-filter body
5. Pre-filter element
6. Pre-filter cap
Service filter elements every 25 operating hours, or more
often if conditions are extremely dusty.
Wash the polyurethane foam element in a mixture of
water and household detergent ensuring that the element
is thoroughly dried before re-oiling.
(Should the foam element be excessively impregnated
with dirt after prolonged use, replace it).
After this cleaning operation, wet the polyurethane foam
with a spoonful of mineral oil and squeeze it lightly to
obtain a uniform distribution of the lubricant throughout
the element.
Clean inside of element housing before refitting filters.
Wash snorkel pipe from inside with a flow of water and
detergent to remove any dust deposits, check pipe for
damage and loose connections.
NOTE - Snorkel pipe to be completely disconnected and
cleaning to be carried out well away from engine.

8. DUAL DRY TYPE PAPER ELEMENT

This air cleaner consists of a paper type element with
felt pad pre-cleaner around it. Fitting of air cleaner for
horizontal crankshaft engines shown in Fig 12, for vertical
crankshaft it is shown in Fig 13A and 13B.
Fig. 13
1. Locating tab
2. Cover
3. Pre-filter (round filters only)
4. Filter element
5. Filter base
6. Press here to release cover (tab)
- Every 25 hours replace felt pad (precleaner)
- Every 75 hours, or yearly, replace felt pad filter (paper
cartridge)
If machine is used in a dusty environment, renew felt
pad or filter more often. Do not attempt to clean or oil
paper cartridge or felt pad.
Never run engine without complete air cleaner (felt pad
and paper cartridge).
35
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Fig. 11
Fig. 12
Fig. 13A