Service Manual

SPECIFICATIONS
4
Standard Torques
Carburetor Specifications
Nut, Shroud 100 - 130 in. lbs. (10 - 14 Nm) 140 - 170 in. lbs. (16 - 19 Nm)
Screw, Starter Bracket to Recoil NA 30 - 35 in. lbs. (3.4 - 3.8 Nm)
Screw, Gov Pivot Block to Cyl. NA 30 - 35 in. lbs. (3.4 - 3.8 Nm)
Screw, Elect Start to Crankcase 140 - 200 in. lbs. (16 - 22 Nm) 75 - 100 in. lbs. (8.2 - 11 Nm)
Size US (Metric)
#10 - 24 20 - 30 in. lbs. (5.1 - 6.21 Nm)
1/4 - 20 55 - 90 in. lbs. (6.2 - 10.0 Nm)
5/16 - 18 140 - 200 in. lbs. (16 - 22 Nm)
Item DuraForce R tek
Type Lawn-Boy, float type, dual-circuit, with primer and choke
Body Material Minlon
Seat material Brass with Viton tipped needle. Both are replaceable.
Inlet Needle “Pop-Off” Pressure 5 psi (.7 k
g
/cm2) (Wet)
Main Jet 77.5 73.8
Main Nozzle Brass
Pilot Jet 37.5 42.5
Hi
g
h Altitude NA
Float Adjustment Float hei
g
ht .500 ± .030" bowl flan
g
e (no
g
asket) to top of float
Item DuraForce R tek