1975 Thunderjet - Vintage Snow

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24
SPECIFICATIONS
Bore
Stroke
D isplacement
MODEL
Compression Rat io 7.0 : 1
L ub ri cati o n
Fuel M ixture 15 : 1
Ignition T im ing
Point Gap
2.68 in. (68 rnrn]
2.35 in. (59 .6 mm)
26.43 cu. in. (433 cc)
Fu el/O il M ixture
0.073 in. (1.8 rnrnl
CO l
Idle RPM 3800
Spar k Plug
Spark Plug Gap
Electrical s vet ern
L ight Coil Resista nce
B9EV NGK
.0 18 in.
12vl00w
SX440
.4~ (75 wl 1.1 (25 w)
Ye llow t o Ground
Gn. to GO
200~
Exciter Coil Resistance
Brown to Blu e
.8 Pr imary
Ign ition Co il Resista nce Or . t o GO .
Grav to GO .
8~
Pulser Coil Resista nce
Wh ite /R ed t o Ground
White/B lack to Ground
Max. R.P.M.
8000 R .P.M.
L ight Co il A ir Gap
Ignit ion Co il A ir Gap
Cy linder Head T orque
Man ifold Torque
Cra nkcase Torqu e
Fixed
Fixed
16.5-19.5 ft. Ibs.
(2.3- 2 .7 m-kgs.)
45 in. Ibs. (0 .5 m-kqs.]
18.0 ft. Ibs. (2 .49 rn-kqs.]
F lywheel Nut Torque 55 ft. Ibs. (7 .1 rn-kqs .l
Clutch Bo lt Torque 75 ft. Ibs. (10.5 rn-kqs .)
Maximum Cylinder Wear
Piston to Cy linder Cl earance
Piston R ing End Gap
Pist on Ring Clearance
Ma x . Crankshaft Runout-Magneto End
Max . Crankshaft Runout·PTO End
Crankshaft Assembled Wid th
Connecting Rod Max. A x ial Play
Clutch Offset .550
Clutch Center to Center 11 "
0.04 in . (0 .10 rnrn)
0.018-0.019 in .
(0 .04-0.05 rnrn)
0.014-0.020 in.
(0. 35-0. 55 rnrn)
0 .01-0.019 in
(0 .03-0.05 mm)
0.Q1 in. (0 .03 mm)
0.01 in. (0 .03 rnrn l
7.01 in.
(178 + 0 .1 mm)
0.080 in. (2 mm)
Drive Belt O.C. 44 ± 3/16
Dr ive Belt Width
1Yo"
I
7200 Sec.
H .T. t o GO .