Two-Stroke Engine

Assembly

Detroit Diesel Engine.jpg · Commons ↗ Report photo

Air-cooled 49 cc single-cylinder two-stroke producing 3-12 hp depending on tune, pull-started.

Direct parts	9
Total parts	11
Used in	1 assembly
Class	Assembly

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Air-cooled 49 cc single-cylinder two-stroke producing 3-12 hp depending on tune, pull-started. A full specification article for this item is being written. Meanwhile its bill of materials and connections are below.

Two-Stroke Engine parts and their functions

9 top-level parts · 11 parts in total · full bill of materials below

Two-Stroke Engine parts diagram: 1 cylinder and head, 2 piston, 3 crankshaft, 4 crankcase, 5 CDI ignition, 6 pull starter, 7 expansion chamber, 8 ball bearing, 9 oil seal. 11 parts in 9 top-level items. — Two-Stroke Engine parts diagram. Numbers match the table below; each box is one top-level part or assembly with what it contains.

#	Part	Qty	What it does
1	Cylinder and Head	1×	Ported cylinder with head
2	Piston	1×	44 mm single-ring piston; the two-stroke piston also acts as the port valve.
3	Crankshaft	1×	Full-circle crank
4	Crankcase	1×	Die-cast case whose volume acts as the scavenge pump below the piston.
5	CDI Ignition	1×	CDI and flywheel magneto
6	Pull Starter	1×	Recoil rope starter on the flywheel side; pocket bikes have no electric start.
7	Expansion Chamber	1×	Tuned expansion chamber
8	Ball Bearing	2×	Crank main bearings (reuse)
9	Oil Seal	2×	Crank seals (reuse)

3D model

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Build & assembly graph

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Bill of materials for Two-Stroke Engine

9 top-level lines · 9 rows shown · 11 parts total · indented to 3 levels

#	Item / sub-assembly	Part no.	Qty/assy	Ext. qty	Parts	Type
1	Cylinder and Head	pocket-bike-cylinder	1×	1	·	part
2	Piston	pocket-bike-piston	1×	1	·	part
3	Crankshaft	pocket-bike-crankshaft	1×	1	·	part
4	Crankcase	pocket-bike-crankcase	1×	1	·	part
5	CDI Ignition	pocket-bike-cdi-ignition	1×	1	·	part
6	Pull Starter	pocket-bike-pull-starter	1×	1	·	part
7	Expansion Chamber	pocket-bike-exhaust	1×	1	·	part
8	Ball Bearing	ball-bearing	2×	2	·	part
9	Oil Seal	oil-seal	2×	2	·	part

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Where the two-stroke engine is used

1 product across 1 domain contain it, directly or inside a sub-assembly

Two-Wheelers & Mobility 1 Pocket Bike

Used in 1 assembly

Pocket Bike

Sourcing: possible vendors

Browse the supplier directory → Prices, MOQ, and lead times are algorithmic estimates, not quotes, and not claims about these companies. Company mappings are curated by keyword; est. price band $500–$50k. How estimates work

Vendor	HQ	Specialty	MOQ	Lead time
🇨🇳Weichai Power weichai.com ↗	Weifang, CN	Diesel & power engines	50 units	12–16 wks
🇮🇳Cummins India cumminsindia.com ↗	Pune, IN	Diesel engines	50 units	12–16 wks
🇨🇳Yuchai yuchai.com ↗	Yulin, CN	Diesel engines	50 units	12–16 wks
🇮🇳Kirloskar Oil Engines koel.co.in ↗	Pune, IN	Diesel & gas engines	50 units	12–16 wks
🇮🇳Ashok Leyland ashokleyland.com ↗	Chennai, IN	Engines & commercial vehicles	50 units	12–16 wks