Chainsaw

Stihl MS 194 T

2-Stroke

The Stihl MS 194 T is a 31.8cc 2-stroke top-handle chainsaw and the step above the MS 192 T in Stihl's arborist lineup. Like all top-handle saws, it is designed for use in an arborist harness during aerial tree work. An M-Tronic variant automatically adjusts carburetion for altitude and fuel quality without manual tuning. The MS 194 T runs a Zama carburetor. Common maintenance items include spark plug, air filter, and fuel lines. The Zama diaphragm wears faster with ethanol-blend fuels common in commercial arborist operations.

See a wrong fitment? Report a correction.

Verify before ordering: Fitment can vary by serial number, production date, region, and sub-model. Match the OEM number and physical dimensions before ordering.

Equipment: Chainsaw · 2-Stroke
Covered Parts: Spark Plug, Air Filter, Fuel Filter, Carburetor, Recoil Starter, Ignition Coil, Primer Bulb, Fuel Line Kit, Chain, Guide Bar
OEM References: 0000 400 7011, 1137 120 1604, 0000 350 3502, 1137 120 0621, 1137 080 2115, 1137 400 1310, 4130 350 6200, 1137 358 7702
Model Family: MS 192 T, MS 194 T
Last Reviewed: 2026-05-20
Data Confidence: Aftermarket-confirmed
Sources Consulted: OEM part references, Aftermarket catalog cross-references, Retailer fitment listings

ℹ See also: MS 192 T — parts are often interchangeable within this family.

Quick Fitment

Part Type	OEM / Spec	Common Option	Confidence
Spark Plug	0000 400 7011	NGK CMR6H	Medium · 2026-05-20
Air Filter	1137 120 1604	OEM 1137 120 1604	Low · 2026-05-20
Fuel Filter	0000 350 3502	OEM 0000 350 3502	Low · 2026-05-20
Carburetor	1137 120 0621	Zama C1Q-S621	Medium · 2026-05-20
Primer Bulb	4130 350 6200	Zama BG-00-4	Medium · 2026-05-20
Recoil Starter	1137 080 2115	OEM 1137 080 2115	Low · 2026-05-20
Ignition Coil	1137 400 1310	OEM 1137 400 1310	Low · 2026-05-20
Fuel Line Kit	1137 358 7702	OEM 1137 358 7702	Low · 2026-05-20

Tune-Up Kit

Common service bundle: spark plug, air filter, fuel filter, carburetor, primer bulb, fuel line kit.

Maintenance Interval

Inspect filters and fuel lines each season, replace spark plugs during annual service, and service carb/fuel-system parts when starting or idle symptoms appear.

Before You Buy

Confirm the full model is Stihl MS 194 T, not just the family name.
Check serial number, production date, and regional variant before ordering.
Match the old OEM number stamped on the removed part when available.
Compare dimensions, plug gap, thread, fuel line diameter, or chain pitch/gauge where applicable.

Common Mistakes

Ordering from a family listing without checking the exact sub-model.
Buying a kit that includes the headline part but wrong gaskets, lines, or bulb size.
Choosing the wrong carburetor revision when multiple versions were used.
Assuming all fuel line kits use the same diameter and routing.
Installing the correct plug number with the wrong gap.
Matching bar length but missing pitch, gauge, or drive-link count.

Symptoms Map

Won't start

Spark plug, fuel filter, primer bulb, carburetor

Starts then dies

Fuel filter, fuel line kit, carburetor

Bogs under throttle

Air filter, carburetor, spark plug gap

Primer will not fill

Primer bulb, fuel line routing, in-tank filter

Cuts slowly

Chain pitch/gauge, bar wear, drive links

Replacement Options

Best OEM equivalent

Start with OEM references 0000 400 7011, 1137 120 1604, 0000 350 3502, 1137 120 0621 and match the removed part before choosing a listing.

Common aftermarket option

Cross-check aftermarket listings such as NGK CMR6H (spark plug), Zama C1Q-S621 (carburetor), Zama BG-00-4 (primer bulb) against the OEM number and dimensions.

Best for annual tune-up

Bundle spark plug, air filter, fuel filter when servicing the Stihl MS 194 T at the start of the season.

Best if replacing fuel system

Compare the fuel filter, carburetor, primer bulb, fuel line kit together so line routing, bulb size, filter style, and carburetor connections match.

Best chain/bar combo

Match chain specs together, especially pitch, gauge, drive links, and bar mount details.

Best budget kit

Use kit listings only when every included part matches this model page; cheap kits often mix correct headline parts with wrong bulbs, lines, or gaskets.

FAQ

Does this fit MS 192 T? Parts may interchange with MS 192 T, but verify the serial range, OEM number, and physical part details before ordering.

Should I buy OEM or aftermarket parts for the Stihl MS 194 T? Use OEM when the part controls fuel metering, ignition, or safety. Aftermarket kits can be useful for routine filters, bulbs, plugs, and tune-up bundles when the OEM number and dimensions match.

How do I avoid ordering the wrong carburetor for the MS 194 T? Match the carburetor number stamped on the removed unit, then compare linkage, choke setup, primer routing, gasket stack, and fuel-inlet direction.

What should I check before replacing fuel-system parts? Photograph the old fuel-line routing, match line diameter and filter style, and compare primer bulb size before buying a kit.

What chain details matter besides bar length? Match pitch, gauge, and drive-link count against the bar stamp, old chain, and drive sprocket. Bar length alone is not enough.

Spark Plug

OEM0000 400 7011Confidence: Medium · Source: Aftermarket catalog

Reviewed: 2026-05-20
Dimensions: NGK CMR6H; 0.5mm gap

Brand	Part #
NGK	CMR6H	Best for annual tune-upAmazonAffiliate link Some links may be affiliate links. Match the OEM number, dimensions, and model variant before buying.

Air Filter

OEM1137 120 1604Confidence: Low · Source: Aftermarket catalog

Reviewed: 2026-05-20
Variant notes: Fits MS 193 T and MS 194 T

Brand	Part #
No aftermarket listing is published for this part yet. Use the OEM reference and verify with a dealer or service manual before ordering.

Fuel Filter

OEM0000 350 3502Confidence: Low · Source: Aftermarket catalog

Reviewed: 2026-05-20
Variant notes: In-tank pickup fuel filter

Brand	Part #
No aftermarket listing is published for this part yet. Use the OEM reference and verify with a dealer or service manual before ordering.

Carburetor

OEM1137 120 0621Confidence: Medium · Source: Aftermarket catalog

Reviewed: 2026-05-20
Variant notes: Zama IntelliCarb compensating carburetor; automatically adjusts air/fuel ratio when filter restricts

Brand	Part #
Zama	C1Q-S621	Best if replacing fuel systemAmazonAffiliate link Some links may be affiliate links. Match the OEM number, dimensions, and model variant before buying.

Recoil Starter

OEM1137 080 2115Confidence: Low · Source: Aftermarket catalog

Reviewed: 2026-05-20
Variant notes: Fits MS 194 T

Brand	Part #
No aftermarket listing is published for this part yet. Use the OEM reference and verify with a dealer or service manual before ordering.

Ignition Coil

OEM1137 400 1310Confidence: Low · Source: Aftermarket catalog

Reviewed: 2026-05-20
Variant notes: Fits MS 194 T and MS 194 C-E

Brand	Part #
No aftermarket listing is published for this part yet. Use the OEM reference and verify with a dealer or service manual before ordering.

Primer Bulb

OEM4130 350 6200Confidence: Medium · Source: Aftermarket catalog

Reviewed: 2026-05-20
Variant notes: Fuel pump primer bulb

Brand	Part #
Zama	BG-00-4	Best if replacing fuel systemAmazonAffiliate link Some links may be affiliate links. Match the OEM number, dimensions, and model variant before buying.

Fuel Line Kit

OEM1137 358 7702Confidence: Low · Source: Aftermarket catalog

Reviewed: 2026-05-20
Variant notes: Fuel pickup line; fits MS 193 T and MS 194 T

Brand	Part #
No aftermarket listing is published for this part yet. Use the OEM reference and verify with a dealer or service manual before ordering.

Chain

OEMSpec-based fitmentConfidence: Low · Source: Inferred

Reviewed: 2026-05-20
Dimensions: 14", 3/8" LP pitch, .043" gauge, 50 drive links
Variant notes: Stock bar length 14"; verify drive link count matches your bar

Brand	Part #
Oregon	90PX050G	Best chain/bar comboAmazonAffiliate link Some links may be affiliate links. Match the OEM number, dimensions, and model variant before buying.

Guide Bar