Toro 51990 Service Manual

You may contact Toro directly at www.Toro.com for product and accessory information, help finding a dealer, or to register your product. Whenever you need service, genuine Toro parts, or additional information, contact an Authorized Service Dealer or Toro Customer Service and have the model and serial numbers of your product ready.

  • Toro Weed Eater Manual 51990a Trimmer; 51990; TORO 51990 Manuals Manuals and User Guides for TORO 51990. We have 2 TORO 51990 manuals available for free PDF download: Operator's Toro Weed Eater Manual 51990a - s2.kora.com Toro-Weed-Eater-Manuals-Kr325072020 Adobe Acrobat Reader DC United StatesDownload Adobe Acrobat Reader DC United States.
  • Toro Weed Eater Manual 51990a Trimmer; 51990; TORO 51990 Manuals Manuals and User Guides for TORO 51990. We have 2 TORO 51990 manuals available for free PDF download: Operator's Toro Weed Eater Manual 51990a - s2.kora.com Toro-Weed-Eater-Manuals-Kr325072020 Adobe Acrobat Reader DC United StatesDownload Adobe Acrobat Reader DC United States.
  • Whenever you need service, genuine Toro parts, or additional information, contact an Authorized Service Dealer or Toro Customer Service and have the model and serial numbers of your product ready. Figure 1 identifies the location of the model and serial numbers on.
Owner's manuals:
- Toro 03660 / 03670 / 03680 / 03690 Reelmaster 5210 / 5410 / 5510 5610 Two-Wheel Drive Traction Unit
- Toro 20041 22' Recycler Lawn Mower (2005, S/N 250000001+, Rev A)
- Toro 20066 / 20067 / 20089 22' Recycler Lawn Mower
- Toro 20092 / 20092C / 20095 / 20095C Super Recycler Lawn Mower
- Toro 20199 / 20200 TimeMaster 30' Lawn Mower
- Toro 20330 / 20330C / 20331 / 20331C / 20350 / 20351 22' Recycler Lawn Mower (2008, Rev B)
- Toro 20331 22' Recycler Lawn Mower (2012, S/N 312000001+, 3373-723 Rev A)
- Toro 20331 22' Recycler Lawn Mower (2012, S/N 312000001+, 3373-753-ASM Rev A)
- Toro 20332 22' Personal Pace Mower
- Toro 20332 22' Recycler Lawn Mower (2015)
- Toro 20332 / 20332C / 20334 / 20334C / 20352 22' Recycler Lawn Mower (2008, Rev B)
- Toro 20332 / 20332C / 20334 / 20334C / 20352 22' Recycler Lawn Mower (2010)
- Toro 20333 / 20333C 22' Recycler Mower (2009)
- Toro 20333 / 20333C 22' Recycler Mower (2011)
- Toro 20333 22' Recycler Lawn Mower
- Toro 20339 22' Recycler Lawn Mower with SmartStow
- Toro 20339 / 20339C 22' Recycler Lawn Mower with SmartStow
- Toro 20340 22' Recycler Lawn Mower with SmartStow
- Toro 20353 22' Recycler Lawn Mower
- Toro 20370 / 20371 / 20377 / 20378 22' Recycler Lawn Mower

Toro 51990a Carburetor Repair Kit

- Toro 20372 / 20374 22' Recycler Lawn Mower (2013, 20 pgs)
- Toro 20372 / 20374 22' Recycler Lawn Mower (2013, 44 pgs)
- Toro 20380 Super Recycler Lawn Mower
- Toro 20381 / 20384 Super Recycler Lawn Mower
- Toro 20382 Super Recycler Lawn Mower
- Toro 20383 Super Recycler Lawn Mower
- Toro 42' Side Discharge Mower (for 78345 Classic Garden Tractor)
- Toro 74021 Proline 616Z / 74101 Proline 620Z 600-Series Zero Radius Mowing Machine
- Toro 74360 / 74363 / 74370 TimeCutter Z4200 / Z4220 / Z5000 Riding Mower
- Toro 74365 / 74366 / 74367 TimeCutter Z4235 / Z5035 Riding Mower
- Toro 74624 / 74625 / 74626 / 74630 / 74632 TimeCutter SS 4235 / SS 4260 / SS 5000 / SS 5060 Riding Mower
- Toro 74625 / 74626 / 74631 / 74632 TimeCutter SS 4235 / 4260 / 5000 / 5060 Riding Mower
- Toro 74832 Titan ZX5450 Zero-Turn-Radius Riding Mower
- Toro 72511 MR4800 / 75212 MR5400 / 75213 MR6000 TimeCutter HD Riding Mower

Setup instructions:
- Toro 74864 / 74865 / 74866 / 74867 / 75201 / 75202 / 75203 / 75210 / 75211 / 75212 / 75213 TimeCutter HD Riding Mower
51990Parts lists:
- Toro 20016 22' Recycler Lawn Mower
- Toro 20041 22' Recycler Lawn Mower (2004, S/N 250000001+)
- Toro 20314 20' Recycling/Rear Bagging Lawn Mower
- Toro 20330 22' Recycler Lawn Mower
- Toro 20331 22' Recycler Lawn Mower (2009, S/N 290000001+, Rev B)
- Toro 20331 22' Recycler Lawn Mower (2012, S/N 312000001+, Rev A)
- Toro 20332 22' Recycler Lawn Mower (2011)
- Toro 20332 22' Recycler Lawn Mower (2012)
- Toro 20332 22' Recycler Lawn Mower (2017)

Bike Service Manual

- Toro 20333 22' Recycler Lawn Mower
- Toro 20334 22' Recycler Lawn Mower (Rev A)
- Toro 20334 22' Recycler Lawn Mower (Rev B)
- Toro 20339 / 20339C 22' Recycler Lawn Mower with SmartStow (2014, S/N 314000001+, 3381-203 Rev A)
- Toro 20339 / 20339C 22' Recycler Lawn Mower with SmartStow (2017, S/N 314000001+, 3381-203 Rev B)
- Toro 20339 / 20339C 22' Recycler Lawn Mower with SmartStow (2017, S/N 315000001+, 3388-340 Rev B)
- Toro 20339 22' Recycler Lawn Mower with SmartStow (2018, S/N 404320000+, 3388-340 Rev B)
- Toro 20340 22' Recycler Lawn Mower with SmartStow
- Toro 20352 22' Recycler Lawn Mower
- Toro 20353 22' Recycler Lawn Mower
- Toro 20370 22' Recycler Lawn Mower (S/N 314200001 - 314999999)
- Toro 20380 Super Recycler Lawn Mower
- Toro 20383 Super Recycler Lawn Mower
- Toro 20384 Super Recycler Lawn Mower
- Toro 74021 Proline 616Z / 74101 Proline 620Z 600-Series Zero Radius Mowing Machine
- Toro 74631 TimeCutter SS 5000 Riding Mower
- Toro 74632 TimeCutter SS 5060 Riding Mower
- Toro 75213 MR6000 TimeCutter HD Riding Mower
- Toro Groundsmaster 3500-D Traction Unit
- Toro Groundsmaster 360 2-Wheel Drive Multipurpose Machine
- Toro Reelmaster 3100-D Traction Unit
Service manuals:
- Toro 04350 Greensmaster 3000 / 0404375 Greensmaster 3000-D
- Toro 04357 Greensmaster 3150
- Toro 30301 / 30302 Groundsmaster 3000 / 3000-D
- Toro 30410 Groundsmaster 4000-D
- Toro 30788 / 30795 Groundsmaster 300 Series
- Toro 30821 / 30839 / 30843 Groundsmaster 3500-D
- Toro Groundsmaster 3505-D
- Toro Groundsmaster 360
- Toro Groundsmaster 3820-D / Groundsmaster 3320
- Toro Quick Service Reference (Aug 2017)
- Toro Reelmaster 2300-D / 2600-D
- Toro Reelmaster 3100-D
- Toro Reelmaster 4000-D
- Toro Reelmaster 5210 / 5410 / 5510 / 5610
- Toro Reelmaster 6500-D / 6700-D
- Toro Reelmaster 7000
- Toro TimeCutter SS / TimeCutter MX / TimeCutter ZS 2011 - 2013 Models
- Toro / Lawn-Boy Quality of Cut (2002)
- Toro / Lawn-Boy Walk Behind Power Mower Drive Systems
- Toro / Lawn-Boy Walk Power Mower Drive Systems (2013)
Service bulletins:
- 506: Fuel Tank Inspection for Leaks and Replacement on various brands of equipment with TecumsehPower Co. model LV156 / LV195 engines

Customer service bulletins:
- 03-03: Engine Fan generates debris in dusty conditions
- 04-02: Kohler Engine Repower Kit Information
- 08-11: Mow Function Stops During Mowing
- 14-17: Wing Deck Castor Wheels Can Scuff Turf
- 18-01: Auxiliary Valve Kit for positioning an Accessory
Dealer advisory bulletins:
- Bulletin 13-010
Recalls:
- 15-729: Walk Behind Power Mower (4/16/15)
If the mower you have isn't listed here, check the Toro.com website. You can find owner's manuals, parts lists, and service bulletins there. (In order to search for a manual on the Toro site, you'll need to know both your model number and serial number.)
  • Model #: 51990
  • Serial #: 250000001 - 250999999
  • Product Type: Trimmers
#DescriptionQty.

Assembly Drawings

Search for a part within assembly drawings:

Showing Results

  • Model #
    51990
  • Serial #
    250000001 - 250999999
  • Product Name
    18in Straight-Shft Gas Trimmer / 8in Brushcutter
  • Product Brand
    Toro
  • Product Type
    Trimmers
  • Product Series
    Trimmer, Straight Shaft (OWT/TTI)
  • Engine Starter
    Recoil
  • Engine: Battery
    None
  • Engine: Engine Oil Type
    Toro 2 cycle / NMMA-TCW3
  • Engine: Mix Ratio
    50:1 (2.6 oz./gal.)
  • Engine: Spark Plug Gap
    .025'/ .64mm
  • Engine: Spark Plug
    NGK BPMR7A

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