SPECIFICATIONS
Specifications
Engine Specifications (All dimensions are for a new engine)
Item
DuraForce
R tek
Type
Reed valve 2-cycle
Piston ported 2-cycle
Bore
2.5000" + .0005 (63.5mm + .0127)
Stroke
1.75" (44.45mm)
Wrist pin diameter
Crankpin diameter
.5000" + .0000 - .0002 (12.70mm + .000 - .005)
.7427" + .0003 - .0002 (18.85mm + .008 - .005)
0
- .017" (0 - .431mm) 1998 Snow
End play (crankshaft)
.
0
- .017" (0 - .431mm) Walk mower
.
0 - .0215" (0 - .533mm) 1999 and
later Snow
Side play (crankshaft) near lower main
Piston cyl. Clearance (tightest loc.)
Wrist pin hole diameter
Bottom ring thickness, new
End gap, new (both rings)
Displacement
.0006" + .0003 - .0006 (.015mm + .008 - .015)
.0035" to .0059" (.089 to .150mm)
.500"/.5005" (12.705mm / 12.712mm)
.0600 + .0005 (1.52mm + .013)
.016/.008 in. (.40/.20mm)
8.6 cu in. (141cc)
Horsepower
6.5HP
4 or 5HP
Compression ratio
Compression
5.8:1
Approximately 115 psi. Service limit 80 psi.
Carburetor
Dual-circuit Lawn-Boy with fixed jets, float type with primer and choke
Unleaded regular (87 octane R+M/2):2-cycle oil
Fuel required
Mix ratio
32:1
50:1
Recommended Oil Lawn-Boy Generation II 2-cycle
.
oil or NMMA TCW3
Toro 2-cycle oil or NMMA TCW3
Fuel tank capacity
Ignition type
CD Pack air gap
Spark plug / air gap
Start system
Governor
Varies with product
Solid-state CD Pack, magneto type
.010" (.25mm)
NGK projected nose / NGK BPMR4A .030" (.76mm)
Rope rewind or 12 VDC
Rope rewind or 120 VAC
Air vane
4HP runs at 3700 + 300
CCR 2400 - 3700
5HP runs at 3800 + 300 rpm
CCR 2450 & 2500 - 3800 rpm
Governed Engine Speed
.
2900 + 300 rpm
.
CCR 3600 - 3900 rpm
CCR 3650 - 4000 rpm
Snow Commander - 4000 rpm
All snow engines are + 300 rpm
Idle Speed
2200 - 2800 rpm
N/A
N/A
Air Cleaner Oiled foam type with Centrifugal
.
pre-cleaner
2
| Categories | Lawn Mower Manual, Lawn-Boy Lawn Mower Manuals, Toro Lawn Mower Manual |
|---|---|
| Download File |
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| Language | English |
| Product Brand | Toro. Customer Service Representatives are available by phone:
Monday - Friday 7:30 a.m. to 9:00 p.m. (CDT) - Saturday 8:00 a.m. to 8:00 p.m. (CDT) - Sunday 10:00 a.m. to 8:00 p.m. (CDT)
Canada 1-888-225-4886 USA 1-888-384-9939, Lawn Mower |
| Document File Type | |
| Publisher | toro.com |
| Wikipedia's Page | Toro Company |
| Copyright | Attribution Non-commercial |
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