Briggs & Stratton 243434 - Manual (Page 3)

Sectiofs
3
MAINTENANCE
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CHECK OIL LEVEL
Check before starting and after every 5 hours of opera­
tion.
BE SURE OIL LEVEL IS MAINTAINED.
CHAWOE OIL fCrankcasel
Change oil after first 5 hours of operation. Thereafter
change oil every 25 hours of operation. Remove the oil
drain plug. Drain oil while engine is warm. Remove
oil filler cap or plug and refill with new oil. Replace
oil filler cap or plug. Add oil regularly after each 5
hours of operation.
SEiViCINe НЕДVf PUT? AIR CLEANEi
Clean and re-oil foam pre>cleaner at 3 month intervals
or every 25 hours, whichever occurs first.
1. Remove wing nut and cover.
2» Remove foam pre-cleaner element by sliding it up
off of the paper cartridge,
3. A — lash foam in liquid detergent and water»
В ~ Squeeze dry.
C — Oil with one ounce engine oil. Squeeze to dis­
tribute oil evenly.
4. Assemble to paper cartridge. Reassemble cover and
wing nut. Screw wing nut down tight
Yearly or every 100 hours, whichever occurs first, re­
move paper cartridge. Clean by tapping gently on flat
surface. If very dirty, replace cartridge, or wash in
liquid detergent and water. Rinse until water remains
clear. Cartridge must be air dried thoroughly before
using.
NOTE: Service more often under dusty conditions.
CLEAN COOLING SYSTEM
Grass or chaff may clog cooling system after prolong­
ed service
in cutting dry grasses or hay. Continued
operation with a clogged cooling system causes se­
vere overheating and possible engine damage. Remove
blower housing
and clean regularly.
CLEAN COMBUSTION CHAMBER every 100-300 hours
of operation. If the engine operates at constant speed
and at relatively constant load, the use of regular au­
tomotive fuels results in a gradual build-up of lead
deposits in the combustion chamber.
This causes the engine to lose power and prevents the
valves from seating properly. Removing the deposits
is easy and will pay big dividends in reliability and
increased valve life.
1. Remove cylinder head screws.
2. Turn crankshaft until piston is at top of cylinder
bore and both valves are closed. Scrape and wire
brush the lead and carbon deposits from cylinder
head and combustion chamber.
3. Re-use cylinder head gasket only if in good condi­
tion. Replace cylinder head. Turn each screw in
with wrench until screw head is lightly seated.
4. Use socket wrench with 6 inch handle and turn all
screws 1/4 turn. Tighten screws in sequence illus­
trated. Run engine approximately 5 minutes and re-
ticjlireo all screws approximately 1/4 turn.
------- WING NUT
DRY TYP€ FILTER
' DRY TYPE
I l°rPooSfS¿So°¿o°°¿ T~ Pit TFP
filter
Clean Air Cleaner
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A S
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