Service Manual
Table Of Contents
- Title Page
- Revision History
- Reader Comments
- Preface
- Table Of Contents
- 1 - Safety
- 2 - Product Records and Maintenance
- 3 - Engine
- Kohler Engine Service Manual
- 4 - Electrical System
- General Information
- Electrical Diagrams
- Special Tools
- Troubleshooting
- Electrical System Quick Checks
- Component Testing
- Ignition Switch
- Hour Meter
- Fuse
- Fusible Link
- Relays
- Remote Transmitter (Machines with Single Channel Controller
- Remote Transmitter (Machines with Multi Channel Controller)
- Wireless Control Module (Machines with Single Channel Controller)
- Wireless Control Module (Machines with Multi Channel Controller)
- Diode Assembly (Serial Number Below 310000000)
- Service and Repairs
- 5 - Blower Assembly
- 6 - Chassis
- 7 - Electrical Diagrams
- Electrical Schematic Model 44538 (S/N Below 310000000)
- Electrical Schematic Models 44538 and 44539 (S/N From 310000000 to 311999999) and Model 44542
- Electrical Schematic Models 44538 and 44539 (S/N Above 312000000)
- Engine Electrical Diagram (S/N Below 310000000)
- Engine Electrical Diagram (S/N Above 310000000)
- Control Module Wake Up
- Crank Circuits
- Run Circuits
- Engine Speed Increase Circuits
- Nozzle Rotation Circuits
- Wire Harness Drawing Model 44538 (S/N Below 310000000)
- Wire Harness Diagram Model 44538 (S/N Below 310000000)
- Wire Harness Drawing Models 44538 and 44539 (S/N 310000000 to 311999999) and Model 44542
- Wire Harness Diagram Models 44538 and 44539 (S/N 310000000 to 311999999) and Model 44542
- Wire Harness Drawing Models 44538 and 44539 (S/N Above 312000000)
- Wire Harness Diagram Models 44538 and 44539 (S/N Above 312000000)
ProForce Debris BlowerPage 3 -- 2Engine
Specifications
Item Description
Make / Designation Kohler, 4--cycle, V--Twin cylinder,
OHV, air cooled, Model CH740S
Bore x Stroke 3.27 in x 2.64 i n (83 mm x 67 mm)
Total Displacement 44 in
3
(725 cc)
Compression Ratio 9.0:1
Governor Electronic
Low Idle Speed (no load) 1800 + 100 RPM
High Idle Speed (no load) 3450 + 100 RPM
Carburetor Float feed, fixed main jet, solenoid fuel shut--off
Fuel Unleaded, regular grade gasoline
Fuel Pump Mechanical
Fuel Tank Capacity 5 U.S. gal (18.9 l)
Air Cleaner Dual element
Lubrication System Pressure lubrication with oil cooler
Crankcase Oil Capacity 2.0U.S.qt(1.9l)
Engine Oil See Operator’s Manual
Ignition System Flywheel magneto, twin electronic armatures with ignition advance
Spark Plug Champion RC12YC (resister style)
Spark Plug Gap 0.030 in (0.76 mm)
Starter 12 VDC, solenoid shift
Alternator 12 VDC / 15 Amps
Dry Weight 94 lbs (43 kg)