Small Engine Specs
Specifications for small engines used on a variety of outdoor power equipment
The trouble with the rat race is that even if you win, you're still a rat. -- Lily Tomlin
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I owe my success to having listened respectfully to the very best advice, and then going away and doing the exact opposite. G. K. Chesterton
Tecumseh Intake and Exhaust Valve Clearances
Standard point ignition: points and ignition coil under flywheel. Solid state and external ignition: Ignition coil outside flywheel, points ( if present ) under flywheel. Solid state: Solid state ignition coil outside flywheel ( no points ).
| Engine Type | Ignition Type | Model Series | Intake and Exhaust Valve Clearance min / max ( in. ) min / max ( mm ) |
| 4-stroke L-head | STANDARD POINT IGNITION | LAV25, LAV30, TVS75 ( 8/1987 & earlier ) | .004 / .008 .102 / .203 |
| 4-stroke L-head | STANDARD POINT IGNITION | H25, H30 ( 1982 & earlier ) | .004 / .008 .102 / .203 |
| 4-stroke L-head | STANDARD POINT IGNITION | H30 ( 1983 Serial No. ) | .004 / .008 .102 / .203 |
| 4-stroke L-head | STANDARD POINT IGNITION | LAV35, H35 ( 1982 & earlier ) | .004 / .008 .102 / .203 |
| 4-stroke L-head | STANDARD POINT IGNITION | H35 ( 1983 Serial No. ) | .004 / .008 .102 / .203 |
| 4-stroke L-head | STANDARD POINT IGNITION | ECV100 | .004 / .008 .102 / .203 |
| 4-stroke L-head | STANDARD POINT IGNITION | TNT100 | .004 / .008 .102 / .203 |
| 4-stroke L-head | STANDARD POINT IGNITION | V40-V40B, VH40, H40, HH40 | .004 / .008 .102 / .203 |
| 4-stroke L-head | STANDARD POINT IGNITION | LAV40, TVS105, HS40, TVXL105 | .004 / .008 .102 / .203 |
| 4-stroke L-head | STANDARD POINT IGNITION | ECV105 | .004 / .008 .102 / .203 |
| 4-stroke L-head | STANDARD POINT IGNITION | ECV110 | .004 / .008 .102 / .203 |
| 4-stroke L-head | STANDARD POINT IGNITION | LAV50, TVS120, HS50 | .004 / .010 .102 / .254 |
| 4-stroke L-head | STANDARD POINT IGNITION | TNT 120, ECV120 | .004 / .010 .102 / .254 |
| 4-stroke L-head | STANDARD POINT IGNITION | V50, VH50, TVM125, H50, HH50 | .008 / .012 .203 / .305 |
| 4-stroke L-head | STANDARD POINT IGNITION | V60, VH60, TVM140, H60, HH60 | .008 / .012 .203 / .305 |
| 4-stroke L-head | STANDARD POINT IGNITION | V70, VH70, VM70, H70, HH70 | .008 / .012 .203 / .305 |
| 4-stroke L-head | STANDARD POINT IGNITION | TVM170, HM70 | .008 / .012 .203 / .305 |
| 4-stroke L-head | STANDARD POINT IGNITION | V80, VM80, H70, HM80 | .008 / .012 .203 / .305 |
| 4-stroke L-head | STANDARD POINT IGNITION | VM80, TVM195, HM80, HHM80 | .008 / .012 .203 / .305 |
| 4-stroke L-head | STANDARD POINT IGNITION | VM100, HM100 | .008 / .012 .203 / .305 |
| 4-stroke L-head | STANDARD POINT IGNITION | TVM220, HM100 | .008 / .012 .203 / .305 |
| 4-stroke L-head | SOLID STATE AND EXTERNAL IGNITION | TVS75 ( 8 / 87 & earlier ) | .004 / .008 .102 / .203 |
| 4-stroke L-head | SOLID STATE AND EXTERNAL IGNITION | TVS90 | .004 / .008 .102 / .203 |
| 4-stroke L-head | SOLID STATE AND EXTERNAL IGNITION | H35 | .004 / .008 .102 / .203 |
| 4-stroke L-head | SOLID STATE AND EXTERNAL IGNITION | V40, TVS105, HS40 | .004 / .008 .102 / .203 |
| 4-stroke L-head | SOLID STATE AND EXTERNAL IGNITION | TVS100, ECV100, TNT100 | .004 / .008 .102 / .203 |
| 4-stroke L-head | SOLID STATE AND EXTERNAL IGNITION | TVS/ TVXL115 57000 Series Only | .004 / .008 .102 / .203 |
| 4-stroke L-head | SOLID STATE AND EXTERNAL IGNITION | LEV115, TVS105 56000 Series | .004 / .008 .102 / .203 |
| 4-stroke L-head | SOLID STATE AND EXTERNAL IGNITION | TVS/TVXL 115, 57000 A & later | .004 / .008 .102 / .203 |
| 4-stroke L-head | SOLID STATE AND EXTERNAL IGNITION | TVS120 J & later | .004 / .008 .102 / .203 |
| 4-stroke L-head | SOLID STATE AND EXTERNAL IGNITION | HS50 H & later | .004 / .008 .102 / .203 |
| 4-stroke L-head | SOLID STATE AND EXTERNAL IGNITION | HSSK N & later | .004 / .008 .102 / .203 |
| 4-stroke L-head | SOLID STATE AND EXTERNAL IGNITION | LAV50, TVS120, HS50 G & earlier | .004 / .008 .102 / .203 |
| 4-stroke L-head | SOLID STATE AND EXTERNAL IGNITION | HSSK50 M & earlier | .004 / .008 .102 / .203 |
| 4-stroke L-head | SOLID STATE AND EXTERNAL IGNITION | VH50, TVM125, H50, HH50 | .008 / .012 .203 / .305 |
| 4-stroke L-head | SOLID STATE AND EXTERNAL IGNITION | LEV80 | .004 / .008 .102 / .203 |
| 4-stroke L-head | SOLID STATE AND EXTERNAL IGNITION | LEV100 | .004 / .008 .102 / .203 |
| 4-stroke L-head | SOLID STATE AND EXTERNAL IGNITION | LEV115 | .004 / .008 .102 / .203 |
| 4-stroke L-head | SOLID STATE AND EXTERNAL IGNITION | LEV120 | .004 / .008 .102 / .203 |
| 4-stroke L-head | SOLID STATE AND EXTERNAL IGNITION | HSK60, VH60, TVM140, H60, HH60 | .008 / .012 .203 / .305 |
| 4-stroke L-head | SOLID STATE AND EXTERNAL IGNITION | V70, VH70,H70, HSK70, HH70, TVM170 (E) MODEL | .008 / .012 .203 / .305 |
| 4-stroke L-head | SOLID STATE AND EXTERNAL IGNITION | HM70 (Models ending in C) | .008 / .012 .203 / .305 |
| 4-stroke L-head | SOLID STATE AND EXTERNAL IGNITION | HM70 (Models ending in D) | .008 / .012 .203 / .305 |
| 4-stroke L-head | SOLID STATE AND EXTERNAL IGNITION | TVM170 Models ( F & UP ), HM70 Models (E & up) | .008 / .012 .203 / .305 |
| 4-stroke L-head | SOLID STATE AND EXTERNAL IGNITION | HMSK80, VM80, TVM195 (A-K), HM80 | .008 / .012 .203 / .305 |
| 4-stroke L-head | SOLID STATE AND EXTERNAL IGNITION | HM80, TVM195 (L & up), TVXL195 | .008 / .012 .203 / .305 |
| 4-stroke L-head | SOLID STATE AND EXTERNAL IGNITION | TVM220 (A-F), HM100 | .008 / .012 .203 / .305 |
| 4-stroke L-head | SOLID STATE AND EXTERNAL IGNITION | HMSK100, TVM220 (G & up), TVXL220, HM100 | .008 / .012 .203 / .305 |
| 4-stroke OHV | SOLID STATE | OVRM40 | .004 .1016 |
| 4-stroke OHV | SOLID STATE | OVRM50-6.75, OVRM105 | .004 .1016 |
| 4-stroke OHV | SOLID STATE | OVRM120 | .004 .1016 |
| 4-stroke OHV | SOLID STATE | OHH50,OHSK50 | .004 .1016 |
| 4-stroke OHV | SOLID STATE | OHH55 - 70,OHSK55 - 70 | .004 .1016 |
| 4-stroke OHV | SOLID STATE | OHSK80 - 110 | .004 .1016 |
| 4-stroke OHV | SOLID STATE | OHM, OHSK, OVM, OVXL120,130, & OHV11-13 | .004 .1016 |
| 4-stroke OHV | SOLID STATE | OHV13.5 - 17 | .004 .1016 |
To lose one parent may be regarded as a misfortune; to lose both looks like carelessness. -- Oscar Wilde