DMS X30

Snap Starter Spring

£3.20

Right-hand for clockwise
(conventional) rotation
Does not require a cam

Application:
All Cox .049 reed-valve engines with round drive plates

Will also fit hex-shaped drive plates but is more difficult to install
Method 1: Unwind spring whilst pushing it onto crankcase

Method 2: Disassemble engine, remove drive plate, install spring, assemble engine