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Stihl BR 800 Service Manual

Stihl BR 800
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BR 8008
4.11 Engine does not start.
4.12 Engine speed drops quickly under load low po-
wer
13. Piston rings broken? Install new piston rings, @ 20.6.
Go to 14.
Go to 14.
14. Is carburetor setting correct? Go to 15. Go to 15.
15. Does condition still exist? Replace carburetor, @ 8.2.
Repair completed.
Repair completed.
Check the following Yes No
Check the following Yes No
1. Is spark plug damp? Go to 2. Go to 4.
2. Is MDG 1 analyzer available? Create diagnostic report.
Test blower with MDG 1 analyzer.
Repair completed.
Go to 4.
3. Create diagnostic report.
Does condition still exist?
Go to 4. Repair completed.
4. Does carburetor choke shutter close
fully?
Go to 5. Replace carburetor, @ 8.2.
Go to 5.
5. Is fuel system leaking? Replace fuel hoses, @ 8.2.
Go to 6.
Go to 6.
6. Break in one wire in wiring harness? Replace throttle cable with wiring har-
ness, @ 14.2 and @ 15.2.
Go to 7.
Go to 7.
7. Are cable lugs on wiring harness and
screws on cylinder dirty?
Clean cable lugs on wiring harness
and screws on cylinder.
Go to 8.
Go to 8.
9. Test engine for leaks, @ 19.3.
Is engine OK?
Go to 10. Replace impulse hose, @ 14.4, man-
ifold, @ 14.6, piston rings or oil seals,
@ 20.4 or seal up or replace crank-
case, @ 20.4.
Go to 10.
10. Does condition still exist? Replace carburetor, @ 8.2.
Repair completed.
Repair completed.
Check the following Yes No
1. Is spark plug damp? Go to 2. Go to 4.
2. Is MDG 1 analyzer available? Go to 3. Go to 4.
3. Create diagnostic report.
Does condition still exist?
Go to 4. Repair completed.
4. Does throttle shutter open fully? Go to 5. Install throttle cable correctly or
replace, @ 14.2 and @ 15.2.
Go to 5.
5. Test tank vent, @ 10.4.
Is tank vent OK?
Go to 6. Fit new tank vent, @ 10.7.
Go to 6.
6. Is pickup body in oil tank dirty? Replace pickup body in fuel tank, @
10.2.
Go to 7.
Go to 7.

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Stihl BR 800 Specifications

General IconGeneral
TypeBackpack blower
Airflow2025 m³/h
Suction mode-
Product colorBlack, Orange, White
Airspeed (max)349.2 km/h
Power sourceGasoline
Sound power level112 dB
Sound pressure level104 dB
Weight and Dimensions IconWeight and Dimensions
Weight11700 g

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