RYOBI 678749001 Trimmer Spring Click to zoom

RYOBI 678749001 Trimmer Head Spool Spring for RY29550, RY30530, RY252CS, RY253SS and RY4CSS String Trimmers

MPN 678749001

In stockTrimmer Spring

Overview

The RYOBI 678749001 is the genuine spool spring for the trimmer heads on a long list of RYOBI gas and electric string trimmers, including the RY29550, RY30530, RY252CS, RY253SS and RY4CSS. The spring sits inside the trimmer head behind the spool and supplies the tension the bump-feed system relies on, so a lost, broken or weak spring can stop the line from advancing when you bump the head. It is a genuine Homelite/RYOBI (Techtronic Industries) part that is also used on several Homelite and Black Max trimmers.

Key features

  • Genuine OEM part: Homelite/RYOBI replacement spring, part number 678749001.
  • Metal compression spring for the trimmer head spool.
  • Sold individually (one spring).
  • Inexpensive fix for a bump head that no longer feeds line.

Fits

  • RYOBI models: RY29550, RY30530, RY30550, RY30570, RY34420, RY34440, P2009, RY15523A, RY252CS, RY253SS, RY254BC, RY25CSEMC, RY4CCS, RY4CSS and RYSST44, including VNM versions of these models.
  • Also listed for: Homelite UT26CSEMC, UT26CSL3 and UT26SSE; Black Max BM25TEC, BM25TEC2, BM26SS and BM4CSSAC series; and trimmer models 51954, 51955, 51956, 51957, 51958, 51974, 51975, 51976, 51977, 51978, 51978A and 51998.
  • How to confirm fitment: find the model number on your trimmer's label and match it to the lists above, or look for 678749001 in your owner's manual parts list. Not sure? Send us your model number and our team will confirm before you order.

Specifications

Brand RYOBI (Homelite/RYOBI genuine parts)
MPN 678749001
Also listed as HOM678749001
Part type Trimmer head spool spring (compression spring)
Material Metal
Approx. size 1.13 x 1.13 x 1.75 in
Item weight About 0.32 oz (9 g)
Quantity 1 spring
Multi-pack numbers 678749001-2PK, 678749001-3PK (sold separately)
Country of origin China
Condition New, genuine OEM

Frequently asked questions

What does the 678749001 spring do?

It sits in the trimmer head behind the spool and keeps the spool under tension, which the bump-feed mechanism needs to release fresh line when you tap the head on the ground.

Which trimmers use the 678749001 spring?

It is listed for RYOBI RY29550, RY30530, RY30550, RY30570, RY34420, RY34440, P2009, RY15523A, RY252CS, RY253SS, RY254BC, RY25CSEMC, RY4CCS, RY4CSS and RYSST44, plus several Homelite and Black Max models. See the full list above.

Is this one spring or a pack?

This listing is for one spring. Multi-packs are sold under separate numbers such as 678749001-3PK.

Is this a genuine RYOBI part?

Yes. It is a new, genuine Homelite/RYOBI replacement part made for Techtronic Industries, sold under the original part number.

Will it fit my RYOBI 18V or 40V trimmer?

Only if your model is on the compatibility list or your manual shows 678749001. RYOBI uses several different head springs, so send us your model number and our team will confirm the right one.

$100 minimum order (or add a $20 handling fee)