We've updated your selection

    Briggs & Stratton   850 Pro Series OHV Ready Start Gas Engine

    Set your store for local inventory & pick up options.
    • Description
      Model
      121Q02-2025-F1
      Internet/Catalog:
      205158162

      Briggs & Stratton builds the engines most of America’s best leading power equipment brands depend on. We’re also the engine most preferred by consumers nearly 60 million households trust their yard care to Briggs & Stratton power. America’s most-trusted brands count on Briggs & Stratton power to stand behind their promise of performance. We know what it’s like to have your name on the line. For more than 100 years, we’ve been living up to ours.

      • Vertical engine
      • Dura-bore cast iron cylinder sleeve for extended life
      • Large-tube muffler reduces noise levels
      • Overhead valve design (OHV) for cooler operation
      • Mechanical torque control for additional power
      • Large rewind starter reduces pulling effort for easy starting
      • Commercial-grade air cleaner with dual seals for longer engine life
      • Ready start provides easy no prime, no choke starting
      • Maintenance-free magnetron electronic ignition for quick, dependable starts
      • Crankshaft: 25 mm Dia x 3-5/32 in. L, 2 WK and keyway
    • Specifications
      Engine Part Type :
      Engine
      Engine Part Type :
      Engine
      Part Type :
      Engine Part
      Product Depth (in.) :
      17
      Product Height (in.) :
      15
      Product Width (in.) :
      16
      Returnable :
      90-Day
    • Reviews
      (10)

      Ratings & Reviews

      90% of customers recommend this product
      4.6
      Out of 5:
      5
      [9]
      4
      3
      2
      1
      [1]
      QUALITY:
      VALUE:
      3.5
      4.5
      • Best Engine you can put on a push mower and here is why.
      • May 18, 2012
      • Recommended Product

      I don't own this engine but I have a family member who does and I have got to use it a few times. I'm going to compare this engine with a Honda GXV160 and tell you why I would pick this engine if I were to buy another commercial push mower. Alright in terms of power, the GXV160, I'd say that is the single most thing I dislike about it, it doesn't have enough. This engine does have the power and I fear it may have too much in the situation where you hit a big root or something. But still the I give the Power point to the Briggs. Terms of reliability, ok lets see here. In terms of starting, both this engine and the honda are an exceeds...I prefer the one or two pulls on the briggs though, to the manual choking on the Honda. But I'd still say its a draw. Now for the big one, Reliability. Both these engines seem to be reliable, both have something I say could be improved. The Briggs starts easy and runs great, so does the Honda. What could be improved on the Briggs, well a stronger crank, maybe a double ball bearing setup like the honda, because it is more powerful so therefore it would be more likely to break if you hit sidewalk or a root. Easy solution, don't use fancy mowers by sidewalks or rooty trees, I still wouldn't do it with a Honda GXV, just use a cheap mower or a weed eater. Ok now what can the "Legendary" honda improve on? Well, the choke system I mentioned earlier. If you get a branch from a small bush or something in the choke system and it bends, then you are going to have fun fixing it or paying 50 bucks an hour to get it fixed. Honda's GXV engine is no good if you can't set it on the right rpm or choke it, and its sad it relies on a small piece of metal attached to a spring that has a guard that doesn't completely cover the mechanism. Sounds like an achilles heal to me. This actually happened to me lol, my "bullet proof" honda commercial mower. In terms of reliability, I will have to give it too the honda, even though it was close...I'd rather fix a bent piece of metal than a bent crank or worse. Performance, well lets see. Briggs, doesn't bog down even in thick wet grass while mulching. Honda, bogs down in wet grass if you haven't mowed for 10 days. Now in reverse, Honda uses less fuel...and is quieter than the briggs which is still a pretty quiet sounding engine. Verdict- I give it to briggs, I'd rather burn a little more gas and not be restarting my mower every 2 minutes when it bogs. Value- the briggs 850 you can get a new engine for under 850 on amazon, the honda is around 400. Terms of whats more for the buck, I say the briggs only because it is cheaper. But too be fair, if you want a fuel efficient very nice sounding engine, the honda is for you. If you want an engine thats gonna get it done in faster in bad conditions you want the briggs 850. Now in conclusion briggs has more points than the honda on my scale. I think it is more of an ideal choice for most conditions. Easier to get parts for, easier to work on than the honda. But by no way am I saying honda is junk it definitely isn't. But if Honda made a 190 gxv it would be a more fair comparison.

      Pros Quiet, powerful, easy to work on, easy starts, cost friendly parts

      Jeffrey1988

      Tamaroa, IL
      more details...
      By: Jeffrey1988
    • Shipping & Delivery Options

      Shipping options for [zipcode] (change)

      Arrival dates and shipping costs shown above are estimates.See exact dates and costs and select your preferred shipping option during checkout.


      EXPRESS DELIVERY FROM STORE:

      Express Delivery from Store is available for items currently in stock at a The Home Depot store within a delivery ZIP code. A driver from a local store will deliver the item(s).


      Outside Delivery:  Service includes delivery to area outside the house which is accessible by delivery equipment.


      Threshold Delivery: Service includes delivery across your first doorway or threshold (ie. garage, backyard, deck, first room of the home).


    This item cannot be shipped to the following state(s): AK,GU,HI,PR,VI

    Find More Engines & Engine Parts TAP TO FILTER