Lawn Boy 10603 149cc Gas Push Lawn Mower Review

Lawn Boy 10603
Lawn Boy 10603 Push Lawn Mower
List Price: $279.99
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Lawn Boy 10603 Push Lawn Mower Review

Looking for a powerful, lightweight push mower capable of handling the toughest of lawns? The Lawn Boy 10603 Gas Push Lawn Mower is a great choice -- especially for homeowners with flat yards to care for.

The 10603 is the entry level model in Lawn Boy's 2011 line of lawn mowers. It is the only mower in this line that is not self-propelled.

10603 Features

The following features are shared among all Lawn-Boy 2011 walk-behind lawn mowers.

Powerful Kohler OHV Engine

The Lawn Boy 10603 Push Mower comes ready to rock with a 6.5 ft.-lb. Kohler OHV engine. Features of this engine include Smart Choke, Easy-Pull and Sure-Start technology, and an easy-fill fueling system designed to reduce spills.

Easy Turn Radius

The Lawn Boy 10603 comes equipped with 8" rear and 7" front wheels.  This larger radius wheel structure makes it effortless to turn and maneuver the mower around trees and other yard obstacles.

20" Steel Cutting Deck

Light and easy to handle, the 10603 comes with a 20 inch cutting deck and deep dome deck design. Not only does this make mowing in tight areas easier than ever, a tri-cut blade design also produced superior mulching capabilities.

3 Mowers in 1

Bag? Mulch? Neither? It's up to you with the Lawn Boy 10603. Set the lawnmower to make use the top-mounted bag system, take advantage of the superior mulching capabilities, or simply use the side discharge to reapply clippings to the lawn. 

Adjustable Height

Easily adjust the cutting height to seven different positions from 1 to 4 inches.

Best Warranty in the Business

Lawn Boy backs both the transmission and engine of this motor for 3 full years.  If at any time the mower does not start on the first pull during this time, Lawn Boy will repair it for free with their 3 Year Tru-Start promise.  The starting, power, and parts are covered under a 2-Year Complete Coverage Warranty.

Non-CARB Compliant

The 10603 is non-CARB compliant. California residents will be interested the CARB-compliant Lawn Boy 10623.


Full Features

  • Engine: 149cc Kohler OHV 6.5 ft./lb.
  • Starter: Recoil
  • Blade Stop: No
  • Deck: 20" Steel
  • Capacity: Bag, Mulch, Discharge
  • Bagging System: Top Mount
  • Self-Propelled: No
  • Wheel Size: 8" Rear, 7" Front
  • Transmission: None, Push Mower
  • Cut Height: 1 to 4 inches, 7 adjustable positions
  • Weight: 68 pounds
  • Warranty: 2 Year + 3 Year Power Train

Lawn Boy 10603 Push Lawn Mower Reviews

Sample Customer Reviews

There is not a large number of reviews to be found online of the Lawn Boy 10603 as it's a brand new model, but the reviews we have located have been outstanding overall. This page will be updated when additional reviews come in.

Positive Customer Reviews

I wanted a regular, push lawnmower as my experience with self-propelled has been nothing but problems. Starts first pull every time. Perfect for my small, mostly level yard.
-- R.C.