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9
en
How To Change The Gear Reduction Oil - Figure
11
If your engine is equipped with a gear reduction unit, service as follows.
1. Remove the oil fill plug (B) and the oil level plug (C).
2. Remove the oil drain plug (A, Figure 11) and drain t he oil into an appropriate
receptacle.
3. Install and tighten the oil drain plug.
4. To refill, slowly pour gearlube into the oil fill hole (see Specifications section).
Continue to pour until the oil runs out of the oil level hole.
5. Install and tighten the oil level plug.
6. Install and tighten the oil fill plug.
Important: The oil fillplug has avent hole (D) andmust be installedon the topof the
gear case cover as shown.
How To Clean The Air Cooling System - Figure
12
Running engines produce heat. Engine parts, especially muffler,
become extremely hot.
Severe thermal burns can occur on contact.
Combustible debris, such as leaves, grass, brush, etc. can catch fire.
WARNING
Allow muffler, engine cylinder and fins to cool before touching.
Remove accumulated debris from muff ler area and cylinder area.
NOTICE: Do not use water to clean the engine. Water could contaminate the fuel
system. Use a brush or dry cloth to clean the engine.
This is an air cooled engine. Dirt or debris can restrict air flow and cause the engine to
overheat, resulting in poor performance and reduced engine life.
Use a brush or dry cloth to remove debris fromthe finger guard (A) (Figure 12). Keep
linkage, springs andcontrols (B) clean. Keep thearea around and behind themuffler (C)
free of any combustible debris.
Storage
WARNING
Fuel and its vapors are extremely flammable and explosive.
Fire or explosion can cause severe burns or death.
When Storing Fuel Or Equipment With Fuel In Tank
Store away from furnaces, stoves, water heaters or other appliances that have
pilot light or other ignition source because they can ignite fuel vapors.
Fuel System
Fuel can become stale when stored over 30 days. Stale fuel causes acid and gum
deposits to form in the fuel system or onessential carburetor parts. To keep fuel fresh,
use Briggs & Stratton Advanced Formula Fuel Treatment & Stabilizer, available
wherever Briggs & Stratton genuine service parts are sold.
There is no need to drain gasoline from the engine if a fuel stabilizer is added according
to instructions.Run the enginefor 2 minutesto circulate thestabilizer throughout the fuel
system before storage.
If gasolinein the enginehas not beentreated witha fuel stabilizer, itmust bedrained into
an approved container. Run the engine until it stops from lack of fuel. The use of a fuel
stabilizer in the storage container is recommended to maintain freshness.
Engine Oil
While the engine is still warm, change the engine oil.
Troubleshooting
Need Assistance? Go to BRIGGSandSTRATTON.COM or call 1-800-233-3723 (in
USA).
Specifications
Engine Specifications
Model 83100
Displacement 7.74 ci (127 cc)
Bore 2.441 in (62 mm)
Stroke 1.654 in (42 mm)
Engine Oil Capacity 18 -- 20 oz (0.54 -- 0.59 L)
Gear Reduction Specifications (if equipped)
Gear Reduction Oil Type 80W-90
Gear Reduction Oil Capacity 4 oz (0.12 L)
Tune-up Specifications *
Model 83100
Spark Plug Gap 0.030 in (0.76 mm)
Spark Plug Torque 180 lb-in (20 Nm)
Armature Air Gap 0.006 - 0.010 in (0.15 - 0.25 mm)
Intake Valve Clearance 0.005 - 0.007 in (0.13 - 0.18 mm)
Exhaust Valve Clearance 0.005 - 0.007 in (0.13 - 0.18 mm)
* Engine powerwill decrease 3.5% for each 1,000 feet (300meters) above sea level and
1% for each 10F(5.6C) above 77F(25C). The engine will operate satisfactorily at
an angle up to 15. Refer to the equipment operator’s manual for safe allowable
operating limits on slopes.
Common Service Parts n
Service Part Part Number
Standard Air Filter 797258
High Capacity Air Filter 796970
Advanced Formula Fuel Treatment &
Stabilizer
5442
Spark Plug 797235
Spark Plug Wrench 89838, 5023
Spark Tester 19368
n We recommend that you see any Briggs & Stratton Authorized Dealer for all
maintenance and service of the engine and engine parts.
Not for
Reproduction