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 | Timing Dimension ( in. / mm ) |
| 4-stroke L-head | STANDARD POINT IGNITION | LAV25, LAV30, TVS75 ( 8/1987 & earlier ) | 0.065 / 1.651 |
| 4-stroke L-head | STANDARD POINT IGNITION | H25, H30 ( 1982 & earlier ) | 0.065 / 1.651 |
| 4-stroke L-head | STANDARD POINT IGNITION | H30 ( 1983 Serial No. ) | 0.035 / .889 |
| 4-stroke L-head | STANDARD POINT IGNITION | LAV35, H35 ( 1982 & earlier ) | 0.065 / 1.651 |
| 4-stroke L-head | STANDARD POINT IGNITION | H35 ( 1983 Serial No.) | 0.035 / .889 |
| 4-stroke L-head | STANDARD POINT IGNITION | ECV100 | 0.035 / .889 |
| 4-stroke L-head | STANDARD POINT IGNITION | TNT100 | 0.035 / .889 |
| 4-stroke L-head | STANDARD POINT IGNITION | V40-V40B, VH40, H40, HH40 | 0.050 / 1.27 |
| 4-stroke L-head | STANDARD POINT IGNITION | LAV40, TVS105, HS40, TVXL105 | 0.035 / .889 |
| 4-stroke L-head | STANDARD POINT IGNITION | ECV105 | 0.035 / .889 |
| 4-stroke L-head | STANDARD POINT IGNITION | ECV110 | 0.035 / .889 |
| 4-stroke L-head | STANDARD POINT IGNITION | LAV50, TVS120, HS50 | 0.035 / .889 |
| 4-stroke L-head | STANDARD POINT IGNITION | TNT 120, ECV120 | 0.035 / .889 |
| 4-stroke L-head | STANDARD POINT IGNITION | V50, VH50, TVM125, H50, HH50 | 0.080 / 2.032 |
| 4-stroke L-head | STANDARD POINT IGNITION | V60, VH60, TVM140, H60, HH60 | 0.080 / 2.032 |
| 4-stroke L-head | STANDARD POINT IGNITION | V70, VH70, VM70, H70, HH70 | 0.080 / 2.032 |
| 4-stroke L-head | STANDARD POINT IGNITION | TVM170, HM70 | 0.090 / 2.286 |
| 4-stroke L-head | STANDARD POINT IGNITION | V80, VM80, H70, HM80 | 0.090 / 2.286 |
| 4-stroke L-head | STANDARD POINT IGNITION | VM80, TVM195, HM80, HHM80 | 0.090 / 2.286 |
| 4-stroke L-head | STANDARD POINT IGNITION | VM100, HM100 | 0.090 / 2.286 |
| 4-stroke L-head | STANDARD POINT IGNITION | TVM220, HM100 | 0.090 / 2.286 |
| 4-stroke L-head | SOLID STATE AND EXTERNAL IGNITION | TVS75 ( 8 / 87 & earlier ) | - |
| 4-stroke L-head | SOLID STATE AND EXTERNAL IGNITION | TVS90 | - |
| 4-stroke L-head | SOLID STATE AND EXTERNAL IGNITION | H35 | - |
| 4-stroke L-head | SOLID STATE AND EXTERNAL IGNITION | V40, TVS105, HS40 | - |
| 4-stroke L-head | SOLID STATE AND EXTERNAL IGNITION | TVS100, ECV100, TNT100 | - |
| 4-stroke L-head | SOLID STATE AND EXTERNAL IGNITION | TVS/ TVXL115 57000 Series Only | - |
| 4-stroke L-head | SOLID STATE AND EXTERNAL IGNITION | LEV115, TVS105 56000 Series | - |
| 4-stroke L-head | SOLID STATE AND EXTERNAL IGNITION | TVS/TVXL 115, 57000 A & later | - |
| 4-stroke L-head | SOLID STATE AND EXTERNAL IGNITION | TVS120 J & later | - |
| 4-stroke L-head | SOLID STATE AND EXTERNAL IGNITION | HS50 H & later | - |
| 4-stroke L-head | SOLID STATE AND EXTERNAL IGNITION | HSSK N & later | - |
| 4-stroke L-head | SOLID STATE AND EXTERNAL IGNITION | LAV50, TVS120 | - |
| 4-stroke L-head | SOLID STATE AND EXTERNAL IGNITION | HS50 G & earlier | - |
| 4-stroke L-head | SOLID STATE AND EXTERNAL IGNITION | HSSK50 M & earlier | - |
| 4-stroke L-head | SOLID STATE AND EXTERNAL IGNITION | VH50, TVM125, H50, HH50 | - |
| 4-stroke L-head | SOLID STATE AND EXTERNAL IGNITION | LEV80 | - |
| 4-stroke L-head | SOLID STATE AND EXTERNAL IGNITION | LEV100 | - |
| 4-stroke L-head | SOLID STATE AND EXTERNAL IGNITION | LEV115 | - |
| 4-stroke L-head | SOLID STATE AND EXTERNAL IGNITION | LEV120 | - |
| 4-stroke L-head | SOLID STATE AND EXTERNAL IGNITION | HSK60, VH60, TVM140, H60, HH60 | - |
| 4-stroke L-head | SOLID STATE AND EXTERNAL IGNITION | V70, VH70,H70, HSK70, HH70, TVM170 (E) MODEL | - |
| 4-stroke L-head | SOLID STATE AND EXTERNAL IGNITION | HM70 (Models ending in C) | - |
| 4-stroke L-head | SOLID STATE AND EXTERNAL IGNITION | HM70 (Models ending in D) | - |
| 4-stroke L-head | SOLID STATE AND EXTERNAL IGNITION | TVM170 Models ( F & UP ), HM70 Models (E & up) | - |
| 4-stroke L-head | SOLID STATE AND EXTERNAL IGNITION | HMSK80, VM80, TVM195 (A-K), HM80 | - |
| 4-stroke L-head | SOLID STATE AND EXTERNAL IGNITION | HM80, TVM195 (L & up), TVXL195 | - |
| 4-stroke L-head | SOLID STATE AND EXTERNAL IGNITION | TVM220 (A-F), HM100 | - |
| 4-stroke L-head | SOLID STATE AND EXTERNAL IGNITION | HMSK100, TVM220 (G & up), TVXL220, HM100 | - |
| 4-stroke OHV | SOLID STATE | OVRM40 | - |
| 4-stroke OHV | SOLID STATE | OVRM50-6.75, OVRM105 | - |
| 4-stroke OHV | SOLID STATE | OVRM120 | - |
| 4-stroke OHV | SOLID STATE | OHH50,OHSK50 | - |
| 4-stroke OHV | SOLID STATE | OHH55 - 70,OHSK55 - 70 | - |
| 4-stroke OHV | SOLID STATE | OHSK80 - 110 | - |
| 4-stroke OHV | SOLID STATE | OHM, OHSK, OVM, OVXL120,130, & OHV11-13 | - |
| 4-stroke OHV | SOLID STATE | OHV13.5 - 17 | - |